AU2011203550B2 - Immunogenic composition - Google Patents

Abstract

The present application relates to immunogenic compositions comprising a mixture of staphylococcal antigens which combines antigen having different functions, for instance, 5 combinations including a staphylococcal extracellular component binding protein and a staphylococcal transporter protein or a staphylococcal extracellular component binding protein and a staphylococcal regulator of virulence or toxin or a staphylococcal transporter protein and a staphylococcal regulator of virulence or toxin. Vaccines, methods of treatment, uses of and processes to make a staphylococcal vaccine are also described.

Description

AUSTRALIA Patents Act COMPLETE SPECIFICATION (ORIGINAL) Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority Related Art: Name of Applicant: GlaxoSmithKline Biologicals s.a. Actual Inventor(s): Cecile Anne Neyt, Nicolas Pierre Fernand Lecrenier, Jan Poolman, Cindy Castado Address for Service and Correspondence: PHILLIPS ORMONDE FITZPATRICK Patent and Trade Mark Attorneys 367 Collins Street Melbourne 3000 AUSTRALIA Invention Title: IMMUNOGENIC COMPOSITION Our Ref: 920427 POF Code: 1271/462676 The following statement is a full description of this invention, including the best method of performing it known to applicant(s): -1- IMMUNOGENIC COMPOSITION The present application is a divisional application from Australian patent application number 2005287502, the entire disclosure of which is Incorporated herein by reference. 5 Technical Field The present invention relates to the field of Staphylococcal immunogenic compositions and vaccines, their manufacture and the use of such compositions in medicine. More particularly, It relates to vaccine compositions comprising a combination of antigens for the treatment or prevention of staphylococcal Infection. Methods of using such vaccines In medicine and methods for their preparation are also provided. Background The number of both community acquired and hospital acquired InfecUons have increased over recent years with the increased use of intravascular devices. Hospital acquired (nosocomial) infections are a major cause of morbidity and mortality, more particularly in the US, where If affects more than 2 million patients annually. Following various studies, about 6 percent of the US patients will acquire an infection during their stay in hospital. The economic burden in the USA was estimated to be more than $4.5 billion in 1992 (Emori and Gaynes, 1993, Clin. Microblol. Rev. 6; 428). The most frequent infections are urinary 1ract infections (UTI-33% of the Infections), followed by pneumonia (15.5%), surgical site infections (14.8%) and primary bloodstream Infections (13%) Emori and Gaynes, 1993, Clin. Microblol. Rev. 6; 428), Staphylococcus aureus, Coagulase-negative Staphylococci (mostly Staphylococcus epidermidis), enterococcus spp, Esherichia coli and Pseudomonas aeruginosa are the major nosocornial pathogens. Although those pathogens almost cause the same number of infections, the severity of the disorders they can produce combined with the frequency of antibiotic resistant Isolates balance this ranking towards S. aureus and S. ep/derm/dis as being the most significant nosocomial pathogens. Staphylococcus aureus is the most common cause of nosocomial infections with a significant morbidity and mortality (Romero-Vivas et al 1995, Infect. Dis. 21; 1417). It is the cause of some cases of osteomyelitis, endocarditis, septic arthritis, pneumonia, abscesses and toxic shock syndrome. 1a WO 2006/032472 PCT/EP2005/010184 S. epidermidis is a normal skin commensal which Is also an important opportunistic pathogen responsible for infections of implanted medical devices and Infections at sites of surgery. Medical devices infected by S. epidermidis include cardiac pacemakers, cerebrospinal fluid shunts, continuous ambulatory peritoneal dialysis catheters, 5 orthopaedic devices and prosthetic heart valves. S. aureus and S. epidermidis infections are treated with antibiotics with penicillin being the drug of choice whereas vancomycin Is used for methicillin resistant Isolates. The percentage of staphylococcal strains exhibiting wide-spectrum resistance to antibiotics 10 has become increasingly prevalent since the 1980's (Panlilo et al 1992, Infect.Control. Hosp. Epidemiol. 13; 582), posing a threat for effective antimicrobial therapy. In addition, the recent emergence of vancomycin resistant S. aureus strain has aroused fear that methicillin resistant S.aureus strains will emerge and spread for which no effective therapy Is available. 15 An alternative approach of using antibodies against staphylococcal antigens in passive immunotherapy has been investigated. Therapy involving administration of polyclonal antisera are under development (WO 00/15238, WO 00/12132) as well as treatment with a monoclonal antibody against lipotelchoic acid (WO 98/57994). 20 An alternative approach would be use of active vaccination to generate an immune response against staphylococci. Several candidates for inclusion as vaccine components have been identified. These include Fibronectin binding protein (US5840846), MHC 1i analogue (US5648240), fibrinogen binding protein (US6008341), GehD (US 25 2002/0169288), collagen binding protein (US6288214), SdrF, SdrG and SdrH (WO 00/12689), mutant SEA and SEB exotoxins (WO 00/02523) and 52kDa vitronectin binding protein (WO 01/60852). The S. aureus genome has been sequenced and many of the coding sequences have 30 been identified (EP786519, W002/094868). The same is true for S. epidermidis (WO 01/34809). As a refinement of this approach, others have identified proteins that are recognised by hyperimmune sera from patients who have suffered staphylococcal Infection (WO01/98499, WO 02/059148). 2 The first generation of vaccines targeted against S. aureus or against the exoproteins it produces have met with limited success (Lee 1996 Trends Microbiol. 4; 162). There remains a need to develop effective vaccines against staphylococcal infections. 5 Description of Figures Figure 1 - Polypeptide sequences of preferred proteins. Table 1 provides information on which protein is represented by each SEQ ID. 10 Figure 2 - Nucleotide sequences encoding preferred proteins. Table 1 provides information on which protein is encoded by each SEQ ID. Figure 3 - Purification of alpha toxin under native conditions. Panel A shows a coommassie stained SDS-PAGE of samples prepared during the purification of alpha 15 toxin. Lane 1 - molecular weight markers, lane 2 - soluble fraction containing over expressed alpha toxin, lane 3 - flow through from the Ni-NTA column, lane 4 - fractions eluted with 10% buffer B, lane 5 - fractions eluted with 20% buffer B, lane 6 - fractions eluted with 30% buffer B, lane 7 - fractions eluted with 50% buffer B, lane 8 - fractions eluted with 75% buffer B, lane 9 and 10 fractions eluted with 100% buffer B, lane 11 20 bacteria at T=0 before induction, lane 12 - bacteria at T=4 hours after induction, lane 13 cell lysate, lane 14 - soluble fraction, lane 15 - insoluble fraction. 3 WO 2006/032472 PCT/EP2005/010184 Panel B shows a coommassie stained SDS-PAGE of 10, 5, 2 and 1p.d of the purified alpha toxin. Figure 4 - Purification of SdrC underdenaturing conditions. Panel A shows a coommassle 5 stained SDS-PAGE of samples prepared during the purification of alpha toxin. Lane M molecular weight markers, lane Start - supernatant fromed from the insoluble fraction containing over-expressed SdrC, lane FT1 - flow through from the Ni-NTA column, lane C - fractions eluted with wash buffer C, lane D - fractions eluted with buffer D, lane E fractions eluted with buffer E. 10 Panel B shows a coommassie stained SDS-PAGE of 1, 2, 5 and 10pl of the purified SdrC. Figure 5 - ELISA results for antisera against staphylococcal proteins in plates coated with purified proteins. 15 Pool mice pre - result using pooled sera extracted from mice pre-Innoculation. Pool mice Post il - result using pooled mouse sera extracted post-immunisatlon. Pool rabbit pre result using pooled sera extracted from rabbits pre-Innoculation. Pool rabbit Post Ill result using pooled rabbit sera extracted post-immunisation. Bic- negative contol. 20 Figure 6 - ELISA results for mouse antisera raised against staphylococcal proteins in plates coated with killed staphylococci. Panel A uses plates coated with S. aureus serotype 5 killed whole cells. Panel B uses 25 plates coated with S. aureus serotype 8 killed whole cells. Panel C uses plates coated with S. epidermidis killed whole cells. The line marked with square signs shows the ELISA result using antisera from mice immunised three times with the indicated staphylococcal protein. The line marked with 30 diamond signs shows the ELISA result for pre-immune mouse sera. Figure 7 - ELISA results for rabbit antisera raised against staphylococcal proteins in plates coated with killed staphylococci. 35 Panel A uses plates coated with S. aureus serotype 5 killed whole cells. Panel B uses plates coated with S. aureus serotype 8 killed whole cells. Panel C uses plates coated with S. epidermidis killed whole cells. The line marked with square signs shows the ELISA result using antisera from rabbits 40 immunised three times with the Indicated staphylococcal protein (except for HarA where only one immunisation was given). The line marked with diamond signs shows the ELISA result for pre-immune rabbit sera. 4 WO 2006/032472 PCT/EP2005/010184 Detailed description The present invention discloses particular combinations of Staphylococcal antigens which 5 when combined, lead to the production of an immunogenic composition that is effective at treating or preventing staphylococcal infection. Immunogenic compositions of the invention suitably incorporate antigens which are involved in different staphylococcal functions. Such Immunogenic compositions target the immune response towards different aspects of the staphylococcal function and are therefore able to Induce a particularly 10 effective immune response. Staphylococcal infections progress through several different stages. For example, the staphylococcal life cycle Involves commensal colonisation, initiation of infection by accessing adjoining tissues or the bloodstream, anaerobic multiplication in the blood, 15 Interplay between S. aureus virulence determinants and the host defence mechanisms and Induction of complications including endocarditis, metastatic abscess formation and sepsis syndrome. Different molecules on the surface of the bacterium will be involved in different steps of the infection cycle. By targeting the immune response against an effective amount of a combination of particular antigens Involved in different processes of 20 Staphylococcal Infection, a Staphylococcal immunogenic composition or vaccine with increased efficacy can be achieved. In particular, combinations of certain antigens from different classes, some of which are Involved in adhesion to host cells, some of which are involved in iron acquisition or other 25 transporter functions, some of which are toxins or regulators of virulence and immunodominant antigens can elicit an immune response which protects against multiple stages of infection. The effectivness of the immune response can be measured either in animal model 30 assays as described in the examples and/or using an opsonophagocytic assay as described in the examples. An. additional advantage of the invention is that the combination of antigens of the invention from different families of proteins in an immunogenic composition will enable 35 protection against a wider range of strains. 5 The invention relates to immunogenic compositions comprising a plurality of proteins selected from at least two different categories of protein, having different functions within Staphylococci. Examples of such categories of proteins are extracellular binding proteins, 5 transporter proteins such as Fe acquisition proteins, toxins or regulators of virulence and other immunodominant proteins. The vaccine combinations of the invention are effective against homologous Staphylococcal strains (strains from which the antigens are derived) and preferably also against heterologous Staphylococcal strains. 10 An immunogenic composition of the invention comprises a number of proteins equal to or greater than 2, 3, 4, 5 or 6 selected from 2 or 3 of the following groups: * group a) - at least one staphylococcal extracellular component binding protein or immunogenic fragment thereof selected from the group consisting of SdrG, laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, CIfA, 15 SdrC, SdrH, Lipase GehD, FnbA, FnbB, Cna, ClfB, FbpA, Npase, IsaAIPisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig and MAP; " group b) - at least one staphylococcal transporter protein or immunogenic fragment thereof selected from the group consisting of Immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC and Ni ABC transporter; and 20 9 group c) - at least one staphylococcal regulator of virulence, toxin or immunogenic fragment thereof selected from the group consisting of alpha toxin (Hla), alpha toxin H35R mutant, RNA Ill activating protein (RAP), provided that alpha toxin (Hla) or alpha toxin H35R mutant is present in the immunogenic composition. 25 In a further embodiment, the immunogenic composition of the invention contains at least one protein selected from group c) and an additional protein selected from group a) and group b), provided that alpha toxin (Hla) or alpha toxin H35R mutant is present in the immunogenic composition. 30 The immunogenic composition of the invention suitably contains proteins from S. aureus, and/or S. epidermidis 6 WO 2006/032472 PCT/EP200S5/010184 Proteins Immunogenic compositions of the Invention comprise an isolated protein which comprises 5 an amino acid sequence which has at least 85% identity, preferably at least 90% identity, more preferably at least 95% identity, most preferably at least 97-99% or exact identity, to that of any sequence of figure 1. Where a protein is specifically mentioned herein, it Is preferably a reference to a native or 10 recombinant , full-length protein or optionally a mature protein in which any signal sequence has been removed. The protein may be isolated directly from the staphylococcal strain or produced by recombinant DNA techniques. Immunogenic fragments of the protein may be incorporated into the immunogenic composition of the invention. These are fragments comprising at least 10 amino acids, preferably 20 amino acids, more preferably 30 amino 15 acids, more preferably 40 amino acids or 50 amino acids, most preferably 100 amino acids, taken contiguously from the amino acid sequence of the protein. In addition, such immunogenic fragments are immunologically reactive with antibodies generated against the Staphylococcal proteins or with antibodies generated by infection of a mammalian host with Staphylococci. Immunogenic fragments also Includes fragments that when administered at 20 an effective dose, (either alone or as a hapten bound to a carrier), elicit a protective Immune response against Staphylococcal infection, more preferably It is protective against S. aureus and/or S. ep/dermid/s infection. Such an immunogenic fragment may include, for example, the protein lacking an N-terminal leader sequence, and/or a transmembrane domain and/or a C-terminal anchor domain. In a preferred aspect the immunogenic fragment according to 25 the Invention comprises substantially all of the extracellular domain of a protein which has at least 85% Identity, preferably at least 90% identity, more preferably at least 95% identity, most preferably at least 97-99% Identity, to that a sequence selected from Figure 1 over the entire length of the fragment sequence. 30 Also Included in immunogenic compositions of the invention are fusion proteins composed of Staphylococcal proteins, or Immunogenic fragments of staphylococcal proteins. Such fusion proteins may be made recombinantly and may comprise one portion of at least 2, 3, 4, 5 or 6 staphylococcal proteins. Alternatively, a fusion protein may comprise multiple portions of at least 2, 3, 4 or 5 staphylococcal proteins. These may combine different 35 Staphylococcal proteins or immunogenic fragments thereof -in the same protein. Alternatively, the invention also includes Individual fusion proteins of Staphylococcal 7 WO 2006/032472 PCT/EP2005/010184 proteins or immunogenic fragments thereof, as a fusion protein with heterologous sequences such as a provider of T-cell epitopes or purification tags, for example: P galactosidase, glutathione-S-transferase, green fluorescent proteins (GFP), epitope tags such as FLAG, myc tag, poly histidine, or viral surface proteins such as influenza virus 5 haemagglutinin, or bacterial proteins such as tetanus toxold, diphtheria toxoid, CRM197. Table I The following table sets out the SEQ ID numbers of preferred protein sequences and DNA sequences that are found In Figure 1 and Figure 2 respectively. SA indicates a sequence 10 from S. aureus and SE Indicates a sequence from S, epidermidis. Name Protein sequence DNA sequence ImmunodomInant ABC transporter SA SEQ ID I SEQ ID 34 SE SEQ ID 2 SEQ ID 35 Laminin receptor SA SEQ ID 3 SEQ ID 36 SE SEQ ID4 SEQ ID 37 Secretory Antigen A SsaA SA 1 SEQ ID 5 SEQ ID 38 SA 2 SEQ ID 6 SEQ ID 39 SE SEQ ID 7 SEQ ID 40 SitC SA SEQ ID 8 SEQ D41 SE SEQ ID 9 SEQ ID 42 8 WO 20061032472 PCT/EP2005/010184 IsaA / PIsA (IssA) SA SEQID10 SEQID43 SE SEQID11 SEQID44 EbhA / _ SA EbhA SEQ ID 12 SEQ ID 45 SA EbhB SEQ ID 13 SEQ ID 46 SE EbhA SEQ ID 14 SEQ ID 47 SE EbhB SEQ ID 15 SEQ ID 48 Accumulation-assoc pro Aap SA SEQ ID 16 SEQ ID 49 SE SEQID17 SEQ ID 50 RNA IlIl activating protein RAP SA SEQ ID18 SEQ ID 51 SE SEQlID19 SEQ ID 52 FIG / SdrG SA SEQ ID_2_0 SEQ ID 53 SE SEQ ID 21 SEQ ID 54 Elastin binding protein EbpS SA SEQ ID 22 SEQ ID 55 SE SEQ ID 23 SEQ ID 56 Extracellular protein EFB SA SEQ ID 24 SEQ ID 57 alpha toxin SA SEQ ID 25 SEQ ID 58 SBISA SEQ ID 26 SEQ ID 59 IsdA SA SEQ ID 27 SEQ ID 60 IsdB SA SEQ ID 28 SEQ ID 61 SdrC SA SEQ ID 29 SEQ 1D 62 CIfA SA SEQ ID 30 SEQ ID 63 FnbA SA SEQ ID 31 SEQ ID 64 ClfB SA SEQ ID 32 SEQ ID 65 Coagulase SA SEQ ID 33 SEQ ID 66 FnbB SA SEQ ID 67 SEQ ID 71 MAP SA SEQ ID 68 SEQ ID 72 SdrC SA SEQ ID 69 SEQ ID 73 SdrG SA SEQ ID 70 SEQ ID 74 Extracellular component binding proteins 5 Extracellular component binding proteins are proteins that bind to host extracellular components. The term includes, but is not limited to adhesins. 9 WO 2006/032472 PCT/EP2005/010184 Examples of extracellular component binding proteins include laminin receptor (Naidu et al J. Med. Microblol. 1992, 36; 177), SitC/MntC/saliva binding protein (US5801234, Wiltshire and Foster Infec. Immun. 2001, 69; 5198), EbhA (Williams et al Infect. Immun. 2002, 70; 6805), EbhB, Elastin binding protein (EbpS) (Park et al 1999, J. Biol. Chem. 5 274; 2845), EFB (FIB) (Wastfelt and Flock 1995, J. Clin. Microblol. 33; 2347), SBI (Zhang et al FEMS Immun. Med. Microbiol. 2000, 28; 211), autolysin (Rupp et al 2001, J. Infect. DIs. 183; 1038), CIfA ( US6008341, McDevitt et al Mol. Microbiol. 1994, 11; 237), SdrC, SdrG (McCrea et al Microbiology 2000, 146; 1535), SdrH (McCrea et al Microbiology 2000, 146; 1535), Lipase GehD (US2002/0169288), SasA, FnbA (Flock et al Mol 10 Microbiol. 1994, 12; 599, US6054572), FnbB (WO 97/14799, Booth et al 2001 Infec. Immun. 69; 345), collagen binding protein Cna (Visal et al 2000, J. Blol. Chem. 275; 39837), ClfB (WO 99/27109), FbpA (Phonimdaeng et al 1988 J. Gen Microbiol.134; 75), Npase (Flock 2001 J. Bacteriol. 183; 3999), IsaA/PisA (Lonenz et al FEMS Immuno. Med. Microbiol. 2000, 29; 145), SsaA (Lang et al FEMS Immunol. Med. Microbiol. 2000, 29; 15 213), EPB (Hussain and Hermann symposium on Staph Denmark 14-17 ' 2000), SSP-1 (Veenstra et al 1996, J. Bacteriol. 178; 537), SSP-2 (Veenstra et al 1996, J. Bacteriol. 178; 537), 17 kDa heparin binding protein HBP (Fallgren et al 2001, J. Med. Microbiol. 50; 547), Vitronectin binding protein (Li et al 2001, Curr. Microblol. 42; 361), fibrinogen binding protein, coagulase, Fig (WO 97/48727) and MAP (US5648240) 20 SItC/MntC/saIiva binding protein This Is an ABC transporter protein which Is a homologue of adhesion PsaA in S. pneumoniae. It is a highly immunogenic 32kDa lipoprotein which is distributed through the 25 bacterial cell wall (Cockayne et al Infect. Immun. 1998 66; 3767). It is expressed in S. aureus and S. ep/dermidis as a 32kDa lipoprotein and a 40kDa homologue is present in S. hominis. In S. ep/dermid/s, it is a component of an iron-regulated operon. It shows considerable homology to both adhesins Including FimA of Streptococcus parasanguls, and with lipoproteins of a family of ABC transporters with proven or putative metal iron 30 transport functions. Therefore SitC Is Included as an extracellular biding protein and as a metal Ion transporter. The saliva binding protein disclosed In US5,801,234 is also a form of SitC and can be included in an immunogenic composition of the invention. 35 QIfA and ClfB Both these proteins have fibrinogen binding activity and trigger S. aureus to form clumps In the presence of plasma. They contain a LPXTG motif common to wall associated 40 proteins. CIfA Is described in US6008341 and CIfB is described in WO 99/27109. 10 WO 2006/032472 PCT/EP2005/010184 Coaqulase (FbpA) This is a fibrinogen binding protein which triggers S. aureus to form clumps in the 5 presence of plasma. It is described in references related to Coagulase : Phonimdaeng et al (J. Gen. Microbio. 1988, 134:75-83), Phonimdaeng et al. (Mol Microbiol 1990; 4:393 404), Cheung et al. (Infect immun 1995; 63:1914-1920) and Shopsin et al. (J. Clin. Microblol. 2000; 38:3453-3456). 10 Preferred fragments for Inclusion in the immunogenic composition of the Invention Include the mature protein In which the signal peptide has been removed (amino acids 27 to the C-terminus). Coagulase has three distinct domains. Amino acids 59-297 which is a coiled coil region, 15 amino acids 326-505 which Is a proline and glycine rich region and the C-terminal domain from amino acid 506 to 645 which has a beta sheet conformation. Each of these domains is a preferred fragment of the Invention. SdrG- Fbe - EfB/FIG 20 Fbe is a fibrinogen binding protein that is found in many Isolates of S. epidermid/s and has a deduced molecular weight of 119 kDa (Nilsson et al 1998. Infect. Immun. 66; 2666). Its sequence is related to that of clumping factor from S. aureus (CIfA). Antibodies against Fbe can block th'e binding of S. epidermidis to fibrinogen coated plates and to catheters 25 (Pei and Flock 2001, J. Infect. Dis. 184; 52). This protein Is also described as SdrG in WO 00/12689. SdrG Is found In coagulase negative staphylococci and Is a cell wall associated protein containing a LPXTG sequence. SdrG contains a signal peptide (amino acids 1-51), a region containing fibrinogen binding 30 sites and collagen binding sites (amino acids 51-825), two CnaB domains (amino acids 627-698 and 738-809), a SD repeat region (amino acids 825-1000) and an anchor domain (amino acids 1009-1056). Fbe has a putative signal sequence with a cleavage site between amino acids 51 and 52. 35 Therefore a preferred fragment of Fbe contains the mature form of Fbe extending from amino acid 52 to the C-terminus (amino acid 1,092). The domain of Fbe from amino acid 52 to amino acid 825 Is responsible for fibrinogen binding. Therefore a preferred fragment of Fbe consists of or contains amino acids 52 40 825. 11 WO 2006/032472 PCT/EP2005/010184 The region between amino acid 373 and 516 of Fbe shows the most conservation between Fbe and CIfA. Preferred fragment will therefore contain amino acids 373-516 of Fbe. 5 Amino acids 825 - 1041 of Fbe contains a highly repetitive region composed of tandemly repeated aspartic acid and serine residues. Preferred fragments of SdrG include polypeptides in which the signal peptide and/or the SD repeats and the anchor domain have been removed. These Include polypeptides 10 comprising or consisting of amino acids 50-825, amino acids 50-633, amino acids 50-597 (SEQ ID NO 2 of WO 03/76470), amino acids 273-597 (SEQ ID NO 4 of WO 03/76470), amino acids 273-577 (SEQ ID NO 6 of WO 03/76470) amino acids 1-549, amino acids 219-549, amino acids 225-549, amino acids 219-528, amino acids 225-528 of SEQ ID ON:70, 15 Preferably, an SdrG polypeptide having a sequence at least 80%, 85%, 90%, 92%, 95%, 97%, 98%, 99% or 100% homologous to the sequence of SEQ ID 70, 20 or 21 is incorporated into the immunogenic composition of the invention. 20 The compositions of the invention optionally comprise a fragment of the SdrG polypeptides described above. Preferred fragments have the signal peptide and/or the SD repeat domain and/or the anchoring domain deleted. For example sequences corresponding to amino acids 1-713, 25 1-549, 225-549, 225-529, 24-717, 1-707, 1-690, 1-680, 1-670, 1-660, 1-650, 1-640, 1-630, 1-620, 1-610, 1-600, 34-707, 44-697, 36-689 of SEQ ID 76 or sequences having 85%, 90%, 92%, 95%, 97%, 98%, 99% or 100% identity to SEQ ID 70 or 20 or 21. Preferred fragment with the signal peptide deleted have a methionine residue at the N 30 terminus of the fragment to ensure correct translation. A more preferred fragment has the following sequence: MEENSVQDVKDSNTDDELSDSNDQSSDEEKNDVINNNQSINTDDNNQIIKKEETNNYDGIEKRSEDRTESTTN 35 VDENEATFLQKTPQDNTHLTEEEVKESSSVESSNSSIDTAQQPSHTTINREESVQTSDNVEDSHVSDFANSKI KESNTESGKEENTIEQPNKVKEDSTTSQPSGYTNIDEKISNQDE LLNLPINEYENKARPLSTTSAQPSIKRVTVNQLAAEQGSNVNHLIKVTDQSITEGYDDSEGVIKAHDAENLIY DVTFEVDDICVKSGDTMTVDIDKNTVPSDLTDSFTIPKIKDNSGEIIATGTYDNKNKQITYTFTDYVDKYENIK AHLKLTSYIDKSKVPNNNTKLDVEYKTALSSVNKTITVEYQRPNENRTANLQSMFTNIDTKNHTVEQTIYINP 40 DRYSAKETNVNISGNGDEGST IIDDSTIIKVYKVGDNQNLPDSNRIYDYSEYEDVTNDDYAQLGNNNDVNINFGNIDSPYIIKVISKYDPNKDD YTTIQQTVTMQTTINEYTGEFRTASYDNTIAFSTSSGQGOGDLPPEKTYKIGDYVWEDVDKDGIONTNDNEKP 12 WO 20061032472 PCT/EP2005/010184 LSNVLVTLTYPDGTSKSVRTDEDGKCYQFDGLKNGLTYKITFETPEGYTPTLKHSGTNPALDSEGNSVWVTING QDDMTIDSGFYQTPKYSLGNY VWYDTNKDGIQGDDEKGISGVKVTLKDENGNIISTTTDENGKYQFDNLNSGNYIVHFDKPSGMTQTTTDSGD DDEQDADGEEVHVTITDHDDFSIDNGYYDDE 5 EbhA and EbhB EbhA and EbhB are proteins that are expressed in both S. aureus and S. epidermidis (Clarke 10 and Foster infect. Immun. 2002, 70; 6680 , Williams et al Infect Immun. 2002, 20; 6805) and which bind to fibronectin, Since fibronectin is an important component of extracellular matrix, EbhA and EbhB have an important function in adhering staphylococci to host extracellular matrix, 15 The Ebh proteins are large, having a molecular weight of 1.1 megadaltons. It is advantageous to use a fragment of the Ebh protein rather than the complete sequence due to ease of production and formulation. The central region of the protein contains imperfect repeats which contain fibronectin binding sites. Fragments containing one or more of the repeat domains described below are preferred fragments for incorporation Into the immunogenic composition 20 of the invention. Ebh proteins contain Imperfect repeats units of 127 amino acids in length which are characterised by containing the consensus sequence: 25 L.G.(10)A.{13)Q.{26)L...M..L.{33)A Preferably .(19)L.G.{lo)A.(13)Q.(26)L...M..L.{33)A.(12) 30 More preferably ..... I/V. .A... I/V. .AK.ALN/DG..NL. .AK. .A. {6)L. LN.AQK. .L. .QI/V. .A. .V.. V.{6)A..LN/D.AM..L...I/V.D/E.. .TK.S.NY/F.N/DAD. K. .AY/F. AV..A. .I/V.N 35 /D ....... 13 WO 2006/032472 PCT/EP2005/010184 Where ' .' means any amino acid and '.{10}' means any 10 amino acids and I/V indicates alternative choices of amino acid. By reference to the sequence disclosed In Kuroda et al (2001) Lancet 357; 1225-1240, and 5 Table 2, the repeat sequences within Ebh proteins are readily deduced. Preferred fragments to be included in the Immunogenic composition of the invention include polypeptides containing of one, two, three, four, five, six, seven, eight, nine, ten or more than 10 of the 127 amino acid repeat units. Such fragments may consist of 1, 2, 3, 4, 5, 6, 7, 6, 9, 10 10 or more repeats of the 127 amino acid repeat region or may consist of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or more repeats with additional amino acid residues present at either or both ends of the fragment. A further preferred fragment is the H2 polypeptide of about 44kDa spanning three repeats (amino acids 3202-3595) as described in Clarke et al Infection and Immunity 70, 6680 6687, 2002. Such fragments will preferably be able to bind fibronectin and/or to elicit 15 antibodies that are reactive against the whole Ebh protein. The Ebh polypeptides are capable of binding to fibronectin. Preferred fragments of these polypeptides sequences retain the ability to bind to fibronectin. Binding to fibronectin can be assessed by ELISA as described by Clarke et al ( Infection and Immunity 70; 6680-6687 20 2002). Still further preferred fragments are those which comprise a B-cell or T-helper epitope, for example those fragments/peptides described in Tables 3 and 4. 25 TABLE 2 Repeat sequences in the full-length sequence of Ebh. The full-length sequence of Ebh is disclosed in Kuroda et al (2001) Lancet 357; 1225 1240. The following table shows the amino acid residues at which the 127 amino acid repeats begin and end within the full length sequence. 30 Begin End 1 3204 3330 2 3331 3457 3 3457 3583 4 3583 3709 5 3709 3835 6 3835 3961 7 3961 4087 14 WO 2006/032472 PCT/EP2005/0141184 8 4200 4326 9 4326 4452 10 4452 4578 11 4578 4704 12 4704 4830 13 4830 4956 14 4956 5082 15 5082 5208 16 5208 5334 17 5334 5460 18 5460 5586 19 5585 5711 20 5711 5837 21 5837 5963 22 5963 6089 23 6089 6215 24 6215 6341 25 6341 6467 26 6467 6593 27 6593 6719 28 6719 6845 29 6845 6971 30 6971 7097 31 7097 7223 32 7223 7349 33 7349 7475 34 7475 7601 35 7601 7727 36 7727 7853 37 7852 7978 38 7978 8104 39 8104 8230 40 8230 8356 41 8356 8482 42 8482 8608 43 8604 8730 44 8858 8984 15 WO 2006/032472 PCT/EP2005/010184 Table 3 B-cell epitope prediction for a 127 amino acid repeat-: The full-length sequence Is disclosed in Kuroda et al (2001) Lancet 357; 1225-1240. One of these repeats, encoded by amino acids 3204-3331of the full-length sequence was 5 chosen to carry out an epitope prediction: MDVNTVNQKAAS VKSTKDALDGQQNLQRAKTBATNAITHASDLNQAQKNALTQ QVNSAQNVHAVNDIKQTTQSLNTAMTGLKRGVANHNQVVQSDNYVNADTNKK NDYNNAYNHANDITNGNAQHPVI 10 Begin End Epitope sequence Start Stop 5 10 TVNQKA 3208 3213 14 19 KSTKDA 3217 3222 21 33 DGQQNLQRAKTEA 3224 3236 42 51 DLNQAQKNAL 3245 3254 66 74 DIKQTTQSL 3269 3277 100 112 ADTNKKNDYNNAY 3303 3315 117 123 DIINGNA 3320 3326 - The "Begin" and "End" columns present the position of the predicted B-cell epitopes in the 127 amino acid repeat 15 - The "Start" and "Stop" columns present the position of the predicted B-cell epitopes in the Ebh full length sequence 16 WO 2006/032472 PCT/EP2005/010184 Table 4 T-helper cell epitope prediction in Ebh: The full-length sequence is disclosed in TrEMBL database, sequence reference Q8NWQ6. One of these repeats, encoded by amino acids 3204-3331 of the full-length 5 sequence was chosen to carry out an epitope prediction: MDVNTVNQKAASVKSTKDALDGQQNLQRAKTEATNAITiASDLNQAQKNALTQ QVNSAQNVHAVNDIKQTTQSLNTAMTGLKRGVANHNQVVQSDNYVNADTNKK NDYNNAYNHANDIINGNAQHPVI 10 Position repeat Epitope sequence Position sequence I MDVNTVNQK 3204 3 VNTVNQKAA 3206 6 VNQKAASVK 3209 26 LQRAKTEAT 3229 37 ITHASDLNQ 3240 43 LNQAQKNAL 3246 51 LTQQVNSAQ 3254 55 VNSAQNVHA 3258 61 VHAVNDIKQ 3264 64 VNDIKQTTQ 3267 67 IKQTTQSLN 3270 74 LNTAMTGLK 3277 78 MTGLKRGVA 3281 81 LKRGVANHN 3284 a5 VANHNQVVQ 3288 91 WQSDNYVN 3294 92 VQSDNYVNA 3295 97 YVNADTNKK 3301 98 VNADTNKKN 3302 108 YNNAYNHAN 3311 112 YNHANDIIN 3315 118 IINGNAQHP 3321 119 INGNAQHPV 3322 - The "Position repeat" column presents the position of the predicted T-cell epitopes in the repeat - The "Position sequence" column presents the position of the predicted T-cell epitopes 15 In the Ebh full length sequence 17 WO 2006/032472 PCT/EP2005/010184 Fragments of the polypeptides of the invention may be employed for producing the corresponding full-length polypeptide by peptide synthesis; therefore, these fragments may be employed as intermediates for producing the full-length polypeptides of the invention. 5 Particularly preferred are variants In which several, 5-10, 1-5, 1-3, 1-2 or I amino acids are substituted, deleted, or added In any combination. Elastin binding protein (EbpS) EbpS is a protein containing 486 amino acids with a molecular weight of 83kDa. It Is associated with the cytoplasmic membrane of S. aureus and has three hydrophobic regions which hold the protein in the membrane (Downer et al 2002, J. Blol, Chem. 277; 243; Park et al 1996, J. Blol. Chem. 271; 15803). 15 Two regIon between amino acids 1-205 and 343-486 are surface exposed on the outer face of the cytoplasmic membrane. The ligand binding domain of EbpS is located between residues 14-34 at the N-terminus (Park et al 1999, J. Biol. Chem. 274; 2845). 20 A preferred fragment to be incorporated into the Immunogenic composition of the invention would be the surface exposed fragment containing the elastin binding region (amino acids 1-205). Some preferred fragments do not contain the entire exposed loop but should contain the elastin binding region (amino acids 14-34). An alternative fragment which could be used consists of amino acids forming the second surface exposed loop 25 (amino acids 343-486). Alternative fragments containing up to 1, 2, 5, 10, 20, 50 amino acids less at one or both ends are also possible. Laminin receptors 30 The laminin receptor of S. aureus plays an important role in pathogenicity. A characteristic feature of Infection Is bloodstream Invasion which allows widespread metastatic abscess formation. Bloodstream Invasion requires the ability to extravasate across the vascular basement membrane. This is achieved through binding to laminin through the laminin receptor (Lopes et al Science 1985, 229; 275). 35 Laminin receptors are surface exposed and are present in many strains of staphylococci Including S. aureus and S. epidermidis. 40 SBI 18 WO 2006/032472 PCT/EP2005/0I(1184 Sb1 is a protein having an lgG binding region and an apolipoprotein H binding domain and it is expressed in most strains of S.aureus (Zhang et al 1998, Microbiology 144; 985). The N-terminus of the sequence of Sbi has a typical signal sequence with a cleavage site 5 after amino acid 29. Therefore a preferred fragment of Sbi to be incorporated into an immunogenic composition of the Invention starts at amino acid residue 30, 31, 32 or 33 and continues to the C-terminus of Sbi, for example of SEQ ID NO: 26. The IgG binding domain of Sbi has been identified as a region towards the N-terminus of 10 the protein from amino acids 41-92. This domain is homologous to the IgG binding domains of protein A. The minimal IgG binding domain of Sbi contains the following sequence: 15 QTTQNNYVTDQQKAFYQVLHLKGITEEQRNQYIKTLREHPERAQEVFSESLK ** *** * *** * * * * * * - denotes amino acids which are similar between IgG binding domains 20 Preferred fragment of Sbi to be included in the immunogenic composition of the Invention contains an IgG binding domain. This fragment contains the consensus sequence for an IgG binding domain as designated by * as shown in the above sequence. Preferably the fragment contains or consists of the complete sequence shown above. More preferably, 25 the fragment contains or consists of amino acids 30-92, 33-92, 30-94, 33-94, 30-146, 33 146, 30-150, 33-150, 30-160, 33-160, 33-170, 33-180, 33-190, 33-200, 33-205 or 33-210 of Sbi, for example of SEQ ID NO:26. Preferred fragment may contain 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 amino acid substitutions from 30 the sequences indicated. Preferred fragments may contain multiple repeats (2, 3, 4, 5, 6, 7,8, 9 or 10) of the IgG binding domain. 35 EFB - FIB Fib is a 19kDa fibrinogen binding protein which is secreted into the extracellular medium by S. aureus. It is produced by all S aureus Isolates tested (Wastfelt and Flock 1995, J. Clin. Microbiol. 33; 2347). 40 S. aureus clumps in the presence of fibrinogen and binds to fibrinogen coated surfaces. This ability facilitates staphylococcal colonisation of catheters and endothelial cells. 19 WO 2006/032472 PCT/EP2005/010184 Fib contains a signal sequence at the N-terminus of the protein with a putative cleavage site at about amino acid 30. Therefore a preferred fragment to be introduced In the immunogenic composition of the Invention would contain the sequence of the mature 5 protein (from about amino acid 30 to the C-terminus of the protein). IsaA/PisA 10 lsaA is a 29kDa protein, also known as PisA has been shown to be a immunodominant staphylococcal protein during sepsis In hospital patients (Lorenz et al 2000, FEMS Immunol. Med. Microb. 29; 145). The first 29 amino acids of the IsaA sequence are thought to be a signal sequence. 15 Therefore a preferred fragment of IsaA to be Included in an immunogenic composition of the Invention would contain amino acid residues 30 onwards, to the end of the coded sequence. Fibronectin binding proteirn 20 Fibronectin binding protein A (FnbA) Is described in US5320951 and Schennings et al (1993, Microb. Pathog. 15; 227). Fibronectin binding protein A contains several domains that are involved In binding to fibronectin (WO 94/18327). These are called D1, D2, D3 and D4. Preferred fragments of fibronectin binding protein A or B comprise or consist of 25 D1, D2, D3, D4, D1-D2, D2-D3, 03-D4, D1-D3, D2-D4 or D1-D4 (as described in WO 94/18327). Fibronectin binding protein contains a 36 amino acid signal sequence. For example: 30 VNNLRYGIRHKLOAASVFLGTMIVVGMGQDKEAA Optionally, the mature protein omitting this signal sequence is included in the immunogenic composition of the invention. 35 Transporter proteins The cell wall of Gram positive bacteria acts as a barrier preventing free diffusion of metabolites into the bacterium. A family of proteins orchestrates the passage of essential nutrients Into the bacterium and are therefore essential for the viability of the bacterium. 40 The term transporter protein covers proteins involved in the initial step of binding to metabolites such as iron as well as those involved in actually transporting the metabolite into the bacterium. 20 WO 2006/032472 PCT/EP2005/010184 Molecular iron Is an essential co-factor for bacterial growth. Siderophores are secreted that bind free iron and then are captured by bacterial surface receptors that deliver Iron for transport across the cytoplasmic membrane. Iron acquisition is critical for the 5 establishment of human infections so that the generation of an Immune response against this class of proteins leads to a loss of staphylococcal viability. Examples of transporter proteins include Immunodominant ABC transporter (Bumle et al 2000 Infect. Imun. 68; 3200), IsdA (Mazmanian et al 2002 PNAS 99; 2293), IsdB 10 (Mazmanian et al 2002 PNAS 99; 2293), Mg2+ transporter, SitC (Wiltshire and Foster 2001 Infect. Immun. 69; 5198) and Ni ABC transporter. Immunodominant ABC transporter 15 Immunodominant ABC transporter is a well conserved protein which may be capable of generating an immune response that is cross-protective against different staphylococcal strains (Mei et al 1997, Mol. Microblol. 26; 399). Antibodies against this protein have been found in patients with septicaemia (Burnie et al 2000, Infect. Immun. 68; 3200). 20 Preferred fragments of Imunodominant ABC transporter will Include the peptides DRHFLN, GNYD, RRYPF, KTTLLK, GVTTSLS, VDWLR, RGFL, more preferably KIKVYVGNYDFWYQS, TVIVVSHDRHFLYNNV and/or TETFLRGFLGRMLFS since these sequences contain epitopes that are recognised by the human immune system. 25 IsdA-IsdB The Isd genes (iron-regulated surface determinant) of S. aureus encode proteins responsible for haemoglobin binding and passage of haem iron to the cytoplasm , where it acts as an essential nutrient. IsdA and IsdB are located in the cell wall of staphylococci. 30 IsdA appear to be exposed on the surface of bacterium since it is susceptible to proteinase K digestion. IsdB was partially digested suggesting that it is partially exposed on the surface of the bacterium (Mazmanian et al 2003 Science 299; 906). IsdA and IsdB are both 29kDa proteins which bind heme. Their expression is regulated by 35 the availability of Iron via the Fur repressor. Their expression will be high during Infection In a host where the concentration of iron will be low. They are also known as FrpA and FrpB (Morrissey et al 2002, Infect. Immun. 70; 2399). FrpA and FrpB are major surface proteins with a high charge. They have been shown to 40 provide a major contribution to adhesion to plastic. 21 In an embodiment, the immunogenic composition of the invention comprises a fragment of IsdA and/or IsdB which is described in WO 01/98499 or WO 03/11899. Toxins and regulators of virulence 5 Members of this family of proteins include toxin such as alpha toxin, hemolysin, enterotoxin B and TSST-1 as well as proteins that regulate the production of toxins such as RAP. Alpha toxin (HIa) 10 Alpha toxin is an important virulence determinant produced by most strains of S.aureus. It is a pore forming toxin with haemolytic activity. Antibodies against alpha toxin have been shown to neutralise the detrimental and lethal effects of alpha toxin in animal models (Adlam et al 1977 Infect. Immun. 17; 250). Human platelets, endothelial cells and mononuclear cells are 15 susceptible to the effects of alpha toxin. The high toxicity of alpha toxin requires that it should be detoxified before being used as an immunogen. This can be achieved by chemical treatment, for instance by treating with formaldehyde, glutaraldehyde of other cross-linking reagents or by chemically conjugating it 20 to bacterial polysaccharides as described below. A further way of removing toxicity is to introduce point mutations that remove toxicity while retaining the antigenicity of the toxin. Histidine 35 appears to be critical for the proper oligomerization required for pore formation and mutation of this residue leads to loss of 25 toxicity. When incorporated into immunogenic compositions of the invention, alpha toxin is preferably detoxified by mutation of His 35, most preferably by replacing His 35 with Arg. In an alternative embodiment, alpha toxin is detoxified by conjugation to other components of the 30 immunogenic composition, preferably capsular polysaccharides, most preferably to S. aureus type V polysaccharide and/or S.aureus Type VIII polysaccharide and/or PNAG. RNA Ill activating protein (RAP) 35 RAP is not itself a toxin, but is a regulator of the expression of virulence factors. RAP is produced and secreted by staphylococci. It activates the agr regulatory system of other staphylococci and activates the expression and subsequent release of virulence factors such as hemolysin, enterotoxin B and TSST-1. 22 WO 2006/032472 PCT/EP2005/010184 An immune response generated against RAP would not kill the bacterium but would Interfere with their pathogenicity. This has the advantage of providing less selective pressure for new resistant strains to emerge. 5 It would have a second advantage of producing an immune response that would be instrumental in reducing the morbidity of the infection. It is particularly advantageous to combine RAP with other antigens in a vaccine, 10 particularly where the additional antigen would provide an immune response that Is able to kill the bacterium. Other proteins 15 Accumulation-associated protein (Aap) Aap is a 140kDa protein which is essential for the accumulation of S. ep/dermidis strains on surfaces (Hussain et al Infect. Immun. 1997, 65; 519). Strains expressing this protein produced significantly larger amounts of blofilm and Aap appear to be involved in biofilm 20 formation. Antibodies against Aap are able to Inhibit biofilm formation and inhibit the accumulation of S. epidermidis. A preferred fragment of Aap is a conserved domain comprising or consisting of amino acids 550-1069. 25 Staphylococcal Secretory antigen SsaA SsaA is a strongly immunogenic protein of 30kDa found in both S. aureus and S. ep/dermldis (Lang et al 2000 FEMS Immunol. Med. Microbiol. 29; 213). Its expression 30 during endocarditis suggested a virulence role specific to the pathogenesis of the infectious disease. SsaA contains an N-terminal leader sequence and a signal peptidase cleavage site. The leader peptide is followed by a hydrophilic region of approximately 100 amino acids from 35 residue 30 to residue 130. A preferred fragment of SsaA to be Incorporated Into the immunogenic composition of the invention is made up of the mature protein (amino acids 27 to the C-terminus or amino acids 30 to the C-terminus). 40 A further preferred fragments contains the hydrophilic area of SsaA from amino acid 30 to amino acid 130, 23 Preferred combinations A preferred combination of proteins in the immunogenic composition of the invention comprises laminin receptor and 1, 2, 3, 4 or 5 further antigens selected from the group 5 consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention comprises SitC and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of 10 immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention comprises EbhA and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of 15 immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention comprises EbhB and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of 20 immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention comprises EbpS and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of 25 immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention comprises EFB(FIB) and 1, 2, 3, 4 or 5 further antigens selected from the group consisting 30 of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention comprises SBI and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of 35 immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 24 A further preferred combination of proteins in the immunogenic composition of the invention comprises autolysin and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 5 A further preferred combination of proteins in the immunogenic composition of the invention comprises ClfA and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 10 A further preferred combination of proteins in the immunogenic composition of the invention comprises SdrC and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, lsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 15 A further preferred combination of proteins in the immunogenic composition of the invention comprises SdrG and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant and RAP. 20 A further preferred combination of proteins in the immunogenic composition of the invention comprises SdrH and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 25 A further preferred combination of proteins in the immunogenic composition of the invention comprises Lipase GehD and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 30 A further preferred combination of proteins in the immunogenic composition of the invention comprises SasA and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, sdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 35 A further preferred combination of proteins in the immunogenic composition of the invention comprises FnbA and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of 25 immunodominant ABC transporter, IsdA, sdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention 5 comprises FnbB and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention 10 comprises Cna and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention 15 comprises ClfB and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention 20 comprises FbpA and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention 25 comprises Npase and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention 30 comprises lsaA/PisA and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention 35 comprises SsaA and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, lsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 26 A further preferred combination of proteins in the immunogenic composition of the invention comprises EPB and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, lsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 5 A further preferred combination of proteins in the immunogenic composition of the invention comprises SSP-1 and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 10 A further preferred combination of proteins in the immunogenic composition of the invention comprises SSP-2 and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 15 A further preferred combination of proteins in the immunogenic composition of the invention comprises HPB and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 20 A further preferred combination of proteins in the immunogenic composition of the invention comprises vitronectin binding protein and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 25 A further preferred combination of proteins in the immunogenic composition of the invention comprises fibrinogen binding protein and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 30 A further preferred combination of proteins in the immunogenic composition of the invention comprises coagulase and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, lsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 35 A further preferred combination of proteins in the immunogenic composition of the invention comprises Fig and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of 27 immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of proteins in the immunogenic composition of the invention 5 comprises MAP and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of protein in the immunogenic composition of the invention 10 comprises immunodominant ABC tranporter and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, CIfA, SdrC, SdrG, SdrH, Lipase GehD, FnbA, FnbB, Cna, ClfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig, MAP, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 15 A further preferred combination of protein in the immunogenic composition of the invention comprises IsdA and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, ClfA, SdrC, SdrG, SdrH, Lipase GehD, FnbA, FnbB, Cna, ClfB, FbpA, Npase, IsaA/PisA, SsaA, 20 EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig, MAP, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of protein in the immunogenic composition of the invention comprises IsdB and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of 25 laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, CIfA, SdrC, SdrG, SdrH, Lipase GehD, FnbA, FnbB, Cna, CIfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig, MAP, alpha toxin, alpha toxin H35R mutant, RAP, Aap and SsaA. 30 A further preferred combination of protein in the immunogenic composition of the invention comprises SitC and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, CIfA, SdrC, SdrG, SdrH, Lipase GehD, FnbA, FnbB, Cna, ClfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig, MAP, alpha toxin, 35 alpha toxin H35R mutant, RAP, Aap and SsaA. A further preferred combination of protein in the immunogenic composition of the invention comprises alpha toxin and 1, 2, 3, 4 or 5 further antigens selected from the group consisting 28 of laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, CIfA, SdrC, SdrG, SdrH, Lipase GehD, FnbA, FnbB, Cna, CIfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig, MAP, immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, 5 Aap and SsaA. A further preferred combination of protein in the immunogenic composition of the invention comprises alpha toxin H35R variant and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), 10 SBI, autolysin, CIfA, SdrC, SdrG, SdrH, Lipase GehD, FnbA, FnbB, Cna, CIfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig, AP, immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, Aap and SsaA. 15 A further preferred combination of protein in the immunogenic composition of the invention comprises Aap and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, CIfA, SdrC, SdrG, SdrH, Lipase GehD, FnbA, FnbB, Cna, ClfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig, MAP, 20 immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, RAP, alpha toxin and H35R alpha toxin. A further preferred combination of protein in the immunogenic composition of the invention comprises SsaA and 1, 2, 3, 4 or 5 further antigens selected from the group consisting of 25 laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, CIfA, SdrC, SdrG, SdrH, Lipase GehD, FnbA, FnbB, Cna, ClfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig, MAP, immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, RAP, alpha toxin and H35R alpha toxin. 30 The inventors have demonstrated that certain antigens produce a particularly effective immune response within the context of a mixture of antigens. Accordingly, an embodiment of the invention is an immunogenic composition comprising IsaA and a staphylococcal transporter protein, or IsaA and a staphylococcal regulator of virulence or toxin, or comprising 35 Sbi and a staphylococcal transporter protein, or Sbi and a staphylococcal regulator of virulence or toxin, or comprising SdrC and a staphylococcal transporter protein, or SdrC and a staphylococcal regulator of virulence or toxin, or IsaA and Sbi, or IsaA and SdrC, or IsaA and autolysin, or IsaA and Ebh, or Sbi and SdrC, or Sbi and Autolysin, or Sbi and Ebh, or 29 SdrC and autolysin, or SdrC and Ebh, or Autolysin-glucosaminidase and Ebh. For each of these combinations, the proteins may be full length or fragments, having sequences at least 85%, 90%, 95%, 98% or 100% identical to that of the sequences of figure 1. 5 In the above and below combinations, the specified proteins may optionally be present in the immunogenic composition of the invention as a fragment or fusion protein as described above. Preferred immunogenic compositions of the invention do not include the protein sequences 10 disclosed in W002/094868. Combinations of three proteins A preferred immunogenic composition of the invention contains three protein components in 15 a combination of alpha-toxin, an extracellular component binding protein (preferably an adhesin) and a transporter protein (preferably an iron-binding protein). In such a combination, the alpha toxin may be chemically detoxified or genetically detoxified by introduction of point mutation(s). The alpha toxin is present as a free protein or 20 alternatively is conjugated to a polysaccharide or LTA component of the immunogenic composition. Preferred combinations include: 25 An immunogenic composition comprising alpha toxin, IsdA and an extracellular component binding protein selected from the group consisting of laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, CIfA, SdrC, SdrG, SdrH, Lipase GehD, FnbA, FnbB, Cna, ClfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig and MAP. 30 An immunogenic composition comprising alpha toxin, IsdB and an extracellular component binding protein selected from the group consisting of laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, CIfA, SdrC, SdrG, SdrH, Lipase GehD, FnbA, FnbB, Cna, ClfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, 35 Vitronectin binding protein, coagulase, Fig and MAP. An immunogenic composition comprising alpha toxin, IsdA and an adhesin selected from the group consisting of laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), 30 CIfA, SdrC, SdrG, SdrH, autolysin, FnbA, FnbB, Cna, ClfB, FbpA, Npase, SSP-1, SSP-2, Vitronectin binding protein, coagulase, Fig and MAP. An immunogenic composition comprising alpha toxin, IsdB and an adhesin selected from the 5 group consisting of laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), autolysin, ClfA, SdrC, SdrG, SdrH, FnbA, FnbB, Cna, ClfB, FbpA, Npase, SSP-1, SSP 2, Vitronectin binding protein, fibrinogen binding protein, coagulase, Fig and MAP. An immunogenic composition comprising alpha toxin, IsdA and laminin receptor. 10 An immunogenic composition comprising alpha toxin, IsdA and EbhA. An immunogenic composition comprising alpha toxin, IsdA and EbhB. 15 An immunogenic composition comprising alpha toxin, IsdA and EbpS. An immunogenic composition comprising alpha toxin, IsdA and EFB (FIB). An immunogenic composition comprising alpha toxin, IsdA and SdrG. 20 An immunogenic composition comprising alpha toxin, IsdA and CIfA. An immunogenic composition comprising alpha toxin, IsdA and CIfB. 25 An immunogenic composition comprising alpha toxin, IsdA and FnbA. An immunogenic composition comprising alpha toxin, IsdA and coagulase. An immunogenic composition comprising alpha toxin, IsdA and Fig. 30 An immunogenic composition comprising alpha toxin, IsdA and SdrH. An immunogenic composition comprising alpha toxin, IsdA and SdrC. 35 An immunogenic composition comprising alpha toxin, IsdA and MAP. 31 Selection of antigens expressed in different clonal lineages Analysis of the occurrence of virulence factors in relation with the population structure of Staphylococcus aureus showed variable presence of virulence genes in natural populations 5 of S. aureus. Among clinical isolates of Staphylococcus aureus, at least five clonal lineages were shown to be highly prevalent (Booth et al., 2001 Infect Immun. 69(1):345-52). Alpha-hemolysin (hla), fibronectin-binding protein A (fnbA) and clumping factor A (c/fA) were shown to be present in 10 most of the isolates, regardless of lineage identity, suggesting an important role of these proteins in the survival of S. aureus (Booth et al., 2001 Infect Immun. 69(1):345-52). Moreover, according to Peacock et al. 2002 the distributions of fnbA, c/fA, coagulase, spa, map, pvl (Panton-Valentine leukocidin), h/g (gamma-toxin), alpha-toxin and ica appeared to be unrelated to the underlying clonal structure suggesting considerable horizontal transfer of 15 these genes. In contrary, other virulence genes such as fibronectin binding protein B (fnbB), beta hemolysin (hlb), collagen binding protein (cna), TSST-1 (tst) and methicillin resistance gene (mecA) are strongly associated with specific lineages (Booth et al., 2001 Infect Immun. 20 69(1):345-52). Similarly, Peacock et al. 2002 (Infect Immun. 70(9):4987-96) showed that the distributions of the enterotoxins, tst, the exfolatins (eta and etb), beta- and delta-toxins, the sdr genes (sdrD, sdrE and bbp), cna, ebpS and efb within the population are all highly significantly related to MLST-derived clonal complexes. 25 MLST data provide no evidence that strains responsible for nosocomial disease represent a distinct subpopulation from strains causing community-acquired disease or strains recovered from asymptomatic carriers (Feil et al., 2003 J Bacteriol. 185(11):3307-16). Preferred immunogenic compositions of the invention are effective against staphylococci from 30 different clonal lineages. 32 WO 2006/032472 PCT/EP2005/010184 In one embodiment, this is achieved by including 1, 2, 3, 4, preferably at least I protein that Is expressed in most isolates of staphylococci. Examples of such proteins include alpha-hemolysin (hla), fibronectin-binding protein A (fnbA) and clumping factor A (c/fA), 5 coagulase, spa, map, pvl (Panton-Valentine leukocidin), hig (gamma-toxin) and ica. We have also identified immunodominant ABC transporter, RAP, autolysin (Rupp et al 2001, J. Infect. Dis. 183; 1038), laminin receptors, SitC, IsaA/PisA, SPOIIIE (), SsaA, EbpS, SasF (Roche et al 2003, Microbiology 149; 643), EFB(FIB), SBI, ClfB, IsdA, IsdB, FnbB, Npase, EBP, Bone sialo binding protein 11, IsaB/PisB (Lorenz et al FEMS Immuno. Med. 10 Microb. 2000, 29; 145), SasH (Roche et al 2003, Microbiology 149; 643), MRPI, SasD (Roche et al 2003, Microbiology 149; 643), SasH (Roche et al 2003, Microbiology 149; 643), aureolysin precursor (AUR)/Seppl and novel autolysin. In an alternative embodiment, 2 or more proteins which are expressed in different sets of 15 clonal strains are included In the Immunogenic composition of the invention. Preferably the combination of antigens will allow an Immune response to be generated that is effective against multiple clonal strains, most preferably against all clonal stains. Preferred combinations include FnbB and betahemolysin, FnbB and Cna, FnbB and TSST-1, FnbB and mecA, FnbB and SdrD, FnbB and SdrF, FnbB and EbpS, FnbB and Efb, beta 20 haemolysin and Cna, beta-haemolysin and TSST-1, beta-haemolysin and mecA, beta haemolysin and SdrD, beta-haemolysin and SdrF, beta-haemolysin and EbpS, beta haemolysin and Efb, Cna and TSST-1, Cna and mecA, Cna and SdrD, Cna and SdrF, Cna and EbpS, Cna and Efb, TSST-1 and mecA, TSST-1 and SdrD, TSST-1 and SdrF, TSST-1 and EbpS, TssT-1 and Efb, MecA and SdrD, MecA and SdrF, MecA and EbpS, 25 MecA and Efb, SdrD and SdrF, SdrD and EbpS, SdeD and Efb, SdrF and EbpS, SdrF and Efb, and, EbpS and Efb. The preferred combinations described above may be combined with additional components described below. 30 Selection of antigens expressed during different growth phases Staphylococci go though an exponential growth phase during which a particular set of proteins will be expressed. These include many of the extracellular component binding 35 proteins and transporter proteins. After a period of exponential growth, the staphylococci revert to a post-exponential phase during which growth is slower and protein expression is modulated. Many of the proteins expressed during the exponential growth phase are down regulated whereas other proteins, such as enzymes and most toxins, including alpha toxin, are expressed at higher levels. 40 Preferred Immunogenic compositions of the invention comprise a protein expressed at higher levels during the exponential growth phase and a protein expressed at higher levels during the post-exponential phase. 33 'Higher levels' refers to the level of expression being higher in one phase in comparison with the other phase. In a preferred embodiment, the immunogenic composition of the invention comprises alpha 5 toxin and an extracellular component binding protein (preferably FnbA, FnbB, CIfA and CIfB) or a transporter protein. More preferably it comprises alpha toxin or Cna or Lipase GehD and a protein selected from the group consisting of laminin receptor, Elastin binding protein (EbpS), EFB (FIB), SBI, 10 autolysin, CIfA, SdrC, SdrG, SdrH, FnbA, FnbB, CIfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase, Fig and MAP, Immunodominant ABC transporter, IsdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter, Aap and SsaA. In the combinations described above, the alpha toxin may be genetically or chemically 15 detoxified as described above and may be unconjugated or conjugated to polysaccharide as described below. Polysaccharides 20 The immunogenic compositions of the invention preferably further comprise capsular polysaccharides including one or more of PIA (also known as PNAG) and/or S. aureus Type V and/or type VIlI capsular polysaccharide and/or S. epidermidis Type 1, and/or Type 11 and/or Type Ill capsular polysaccharide. 25 PIA (PNAG) It is now clear that the various forms of staphylococcal surface polysaccharides identified as PS/A, PIA and SAA are the same chemical entity - PNAG (Maira-Litran et al Vaccine 22; 872-879 (2004)). Therefore the term PIA or PNAG encompasses all these polysaccharides or 30 oligosaccharides derived from them. PIA is a polysaccharide intercellular adhesin and is composed of a polymer of p-(1--6)-linked glucosamine substituted with N-acetyl and 0-succinyl constituents. This polysaccharide is present in both S. aureus and S. epidermidis and can be isolated from either source (Joyce et 35 al 2003, Carbohydrate Research 338; 903; Maira-Litran et al 2002, Infect. Imun. 70; 4433). For example, PNAG may be isolated from S. aureus strain MN8m (WO 04/43407) 34 WO 2006/032472 PCT/EP2005/0101h84 PIA isolated from S. epidermidis Is a integral constituent of blofilm. It is responsible for mediating cell-cell adhesion and probably also functions to shield the growing colony from the host's immune response. 5 The polysaccharide previously known as poly-N-succinyl-p-(1 -+6)-glucosamine (PNSG) was recently shown not to have the expected structure since the Identification of N succinyiation was incorrect (Maira-Litran et al 2002, infect. Imun. 70; 4433). Therefore the polysaccharide formally known as PNSG and now found to be PNAG is also encompassed by the term PIA. 10 PIA (or PNAG) may be of different sizes varying from over 400kDa to between 75 and 400kDa to between 10 and 75kDa to oligosaccharides composed of up to 30 repeat units (of p-(1 -+6)-linked glucosamine substituted with N-acetyl and 0-succinyl constituents). Any size of PIA polysaccharide or oligosaccharide may be use in an Immunogenic 15 composition of the invention, however a size of over 40kDa is preferred. Sizing may be achieved by any method known in the art, for instance by microfluidisation, ultrasonic irradiation or by chemical cleavage (WO 03/53462, EP497524, EP497525). Preferred size ranges of PIA (PNAG) are 40-400kDa, 40-300kDa, 50-35OkDa, 60-300kDa, 20 50-25OkDa and 60-200kDa, PIA (PNAG) can have different degree of acetylation due to substitution on the amino groups by acetate. PIA produced in vitro is almost fully substituted on amino groups (95 100%). Alternatively, a deacetylated PIA (PNAG) can be used having less than 60%, 25 preferably less than 50%, 40%, 30%, 20%, 10% acetylation. Use of a deacetylated PIA (PNAG) is preferred since non-acetylated epitopes of PNAG are efficient at mediating opsonic killing of Gram positive bacteria, preferably S. aureus and/or S. epidermidis. Most preferably, the PIA (PNAG) has a size between 40kDa and 300kDa and is deacetylated so that less than 60%, 50%, 40%, 30% or 20% of amino groups are acetylated. 30 The term deacetylated PNAG (dPNAG) refers to a PNAG polysaccharide or oligosaccharide in which less than 60%, 50%, 40%, 30%, 20% or 10% of the amino agroups are acetylated. 35 In an embodiment, PNAG is a deaceylated to form dPNAG by chemically treating the native polysaccharide. For example, the native PNAG is treated with a basic solution such that the pH rises to above 10. For Instance the PNAG is treated with 0.1-SM, 0.2-4M, 0.3 3M, 0.5-2M, 0.75-1.5M or 1M NaOH, KOH or NH4OH. Treatment is for at least 10 or 30 minutes, or 1, 2, 3, 4, 5, 10, 15 or 20 hours at a temperature of 20-100, 25-80, 30-60 or 40 30-50 or 35-45 *C. dPNAG may be prepared as described in WO 04/43405. 35 WO 2006/032472 PCT/EP2005/010184 The polysaccharlde(s) included in the immunogenic composition of the invention are preferably conjugated to a carrier protein as described below or alternatively unconjugated. 5 Type 5 and Type 8 polysaccharides from S.aureus Most strains of S.aureus that cause infection in man contain either Type 5 or Type 8 polysaccharides. Approximately 60% of human strains are Type 8 and approximately 30% are Type 5. The structures of Type 5 and Type 8 capsular polysaccharide antigens are 10 described in Moreau et al Carbohydrate Res. 201; 285 (1990) and Fournier et al Infect. Immun. 45; 87 (1984). Both have FucNAcp in their repeat unit. as well as ManNAcA which can be used to Introduce a sulfhydryl group. The structures were reported as: Type 5 15 -+4)-p-D-ManNAcA(3OAc)-(1 -+4)-a-L-FucNAc(1 ->3)-p-D-FucNAc-(1 --+ Type 8 20 -- +3)-P-D-ManNAcA(4OAc)-(1 -+3)-a-L-FucNAc(1 --+3)-p-D-FucNAc-(1 -+ Recently (Jones Carbohydrate Research 340, 1097-1106 (2005)) NMR spectroscopy revised to structures to: 25 Type 5 -+4)-P-D-ManNAcA-(1 -+4)-a-L-FucNAc(30Ac)-(1 --+3)-p-D-FucNAc-(1 Type 8 30 -- +3)-P-D-ManNAcA(40Ac)-(1 --+3)-m-L-FucNAc(1 -+3)-a-D-FucNAc(1 Polysaccharides may be extracted from the appropriate strain of S. aureus using method well known to the skilled man, for Instance as described in US6294177. For example, 35 ATCC 12902 Is a Type 5 S. aureus strain and ATCC 12605 is a Type 8 S. aureus strain. Polysaccharides are of native size or alternatively may be sized, for instance by microfluidisation, ultrasonic irradiation or by chemical treatment. The Invention also covers oligosaccharides derived from the type 5 and 8 polysaccharides from S. aureus. 40 36 WO 2006/032472 PCT/EP2005/010184 The type 5 and 8 polysaccharides included in the immunogenic composition of the invention are preferably conjugated to a carrier protein as described below or are alternatively unconjugated. 5 The immunogenic compositions of the invention alternatively contains either type 5 or type 8 polysaccharide. S. aureus 336 antigen 10 In an embodiment, the immunogenic composition of the invention comprises the S. aureus 336 antigen described in US6294177. The 336 antigen comprises p-linked hexosamine, contains no 0-acetyl groups and specifically binds to antibodies to S. aureus Type 336 deposited under ATCC 55804. 15 In an embodiment, the 336 antigen is a polysaccharide which Is of native size or alternatively may be sized, for Instance by microfluidisation, ultrasonic Irradiation or by chemical treatment. The invention also covers oligosaccharides derived from the 336 antigen. 20 The 336 antigen, where included in the immunogenic composition of the invention is preferably conjugated to a carrier protein as described below or are alternatively unconjugated. 25 Type1, 11 and II polysaccharides frOomS.eidermidis Strains ATCC-31432, SE-360 and SE-10 of S. ep/dermidis are characteristic of three different capsular types, 1, 11 and Ill respectively (Ichiman and Yoshida 1981, J. Apple. Bacteriol. 51; 229). Capsular polysaccharides extracted from each serotype of S. 30 epidermidls constitute Type 1, I and Ill polysaccharides. Polysacchardes may be extracted by serval methods including the method described in US4197290 or as described in Ichiman et al 1991, J. Apple. Bacteriol, 71; 176. In one embodiment of the Invention, the immunogenic composition comprises type I 35 and/or 1i and/or Ill polysaccharides or oligosaccharides from S. ep/dermidis. Polysaccharides are of native size or alternatively may be sized, for instance by microfluidisation, ultrasonic irradiation or chemical cleavage. The invention also covers oligosaccharides extracted from S. epidermidis strains. 40 These polysaccharides are unconjugated or are preferably conjugated as described below. 37 WO 2006/032472 PCT/EP2005/010194 Conlugation of polysaccharides Amongst the problems associated with the use of polysaccharides in vaccination. is the 5 fact that polysaccharides per se are poor immunogens. Strategies, which have been designed to overcome this lack of immunogenicity, include the linking of the polysaccharide to large protein carriers, which provide bystander T-cell help. It is preferred that the polysaccharldes utilised in the Invention are linked to a protein carrier which provide bystander T -cell help. Examples of such carriers which may be 10 conjugated to polysaccharide Immunogens include the Diphtheria and Tetanus toxoids (DT, DT crm197 and TT respectively), Keyhole Limpet Haemocyanin (KLH), and the purified protein derivative of Tuberculin (PPO), Pseudomonas aeruginosa exoprotein A (rEPA), protein D from Haemophilus influenzae, pneumolysin or fragments of any of the above. Fragments suitable for use include fragments encompassing T-helper epitopes. 15 In particular protein D fragment will preferably contain the N-terminal 1/3 of the protein. Protein D is an IgD-binding protein from Haemophilus Influenzae (EP 0 594 610 B1) and is a potential immunogen. In addition, staphylococcal proteins may be used as carrier protein in the polysaccharide 20 conjugates of the invention. The staphylococcal proteins described below may be used as carrier protein; for example, laminin receptor, SitC/MntC/saliva binding protein, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, CIfA, SdrC, SdrG, SdrH, Lipase GehD, SasA, FnbA, FnbB, Cna, CIfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP 2, HBP, Vitronectin binding protein, fibrinogen binding protein, coagulase, Fig, MAP, 25 Immunodominant ABC transporter, isdA, IsdB, Mg2+ transporter, SitC, Ni ABC transporter alpha toxin (HIa), alpha toxin H35R mutant, RNA IlIl activating protein (RAP), or fragments thereof. A new carrier protein that would be particularly advantageous to use In the context of a 30 staphylococcal vaccine is staphylococcal alpha toxold. The native form may be conjugated to a polysaccharide since the process of conjugation reduces toxicity. Preferably a genetically detoxified alpha toxin such as the His35Leu or His 35 Arg variants are used as carriers since residual toxicity is lower. Alternatively the alpha toxin Is chemically detoxified by treatment with a cross-linking reagent, formaldehyde or 35 glutaraldehyde. A genetically detoxified alpha toxin is optionally chemically detoxified, 38 WO 2006/032472 PCT/EP2005/010184 preferably by treatment with a cross-linking reagent, formaldehyde or glutaraldehyde to further reduce toxicity. The polysaccharldes may be linked to the carrier protein(s) by any known method (for 5 example, by Likhite, U.S. Patent 4,372,945 by Armor et al., U.S. Patent 4,474,757, and Jennings et al., U.S. Patent 4,356,170). Preferably, CDAP conjugation chemistry Is carried out (see WO95/08348). In CDAP, the cyanylating reagent 1-cyano.dimethylaminopyridinium tetrafluoroborate 10 (CDAP) Is preferably used for the synthesis of polysaccharide-protein conjugates. The cyanilation reaction can be performed under relatively mild conditions, which avoids hydrolysis of the alkaline sensitive polysaccharides. This synthesis allows direct coupling to a carrier protein. 15 The polysaccharide is solubilized in water or a saline solution. CDAP is dissolved in acetonitrile and added Immediately to the polysaccharide solution. The CDAP reacts with the hydroxyl groups of the polysaccharide to form a cyanate ester. After the activation step, the carrier protein is added. Amino groups of lysine react with the activated polysaccharide to form an Isourea covalent link. After the coupling reaction, a large 20 excess of glycine is then added to quench residual activated functional groups. The product is then passed through a gel permeation column to remove unreacted carrier protein and residual reagents. Conjugation preferably involves producing a direct linkage between the carrier protein 25 and polysaccharide. Optionally a spacer (such as adipic dihydride (ADH)) may be introduced between the carrier protein and the polysaccharlde. Protection against S.aureus and S. epidermidis 30 in a preferred embodiment of the Invention the immunogenic composition provides an effective immune response against more than one strain of staphylococci, preferably against strains from both S.aureus and S. ep/derm/dis. More preferably, a protective immune response is generated against type 5 and 8 serotypes of S. aureus. More preferably, a protective immune response Is generated against multiple strains of S. 35 epidermidis, for instance from strains of at least two of serotypes 1, 11 and IlIl of S. epidermidis. 39 One use of the immunogenic composition of the invention is to prevent nosocomial infections by inoculating prior to hospital treatment. At this stage, it is difficult to accurately predict which staphylococcal strains the patient will be exposed to. It is therefore advantageous to inoculate with a vaccine that is capable of generating an effective immune response against various 5 strains of staphylococci. An effective immune response is defined as an immune response that gives significant protection in a mouse challenge model or opsonophagocytosis assay as described in the examples. Significant protection in a mouse challenge model, for instance that of example 5, 10 is defined as an increase in the LD50 in comparison with carrier inoculated mice of at least 10%, 20%, 50%, 100% or 200%. Significant protection in a cotton rat challenge model, for instance that of example 8, is defined as a decrease in the mean observed LogCFU/nose of at least 10%, 20%, 50%, 70% or 90%. The presence of opsonising antibodies is known to correlate with protection, therefore significant protection is indicated by a decrease in the 15 bacterial count of at least 10%, 20%, 50%, 70% or 90% in an opsonophagocytosis assay, for instance that of example 7. Several of the proteins including immunodominant ABC transporter, RNA Ill activating protein, Laminin receptors, SitC, IsaA/PisA, SsaA, EbhA/EbhB, EbpS and Aap are well 20 conserved between S.aureus and S. epidermidis and example 8 shows that IsaA, CIfA, IsdB, SdrG, HarA, FnbpA and Sbi can generate a cross-reactive immune response (for example crossreactive between at least one S. aureus and at least one S. epidermidis strain). PIA is also well conserved between S. aureus and S. epidermidis and is capable of inducing a cross-protective immune response. 25 Therefore in a preferred embodiment, the immunogenic composition of the invention will comprise two, three or four of the above proteins, preferably further comprising PIA (PNAG). Polynucleotide vaccines 30 A further aspect of the present disclosure relates to the use of the polynucleotides of Figure 2 in the treatment, prevention or diagnosis of staphylococcal infection. Such polynucleotides include isolated polynucleotides comprising a nucleotide sequence encoding a polypeptide which has at least 70% identity, preferably at least 80% identity, more preferably at least 90% 35 identity, yet more preferably at least 95% identity, to the amino acid sequence of Figure 1, over the entire length of the sequence. In this regard, polypeptides which have at least 97% 40 identity are highly preferred, whilst those with at least 98-99% identity are more highly preferred, and those with at least 99% identity are most highly preferred. Further polynucleotides include isolated polynucleotides comprising a nucleotide sequence 5 that has at least 70% identity, preferably at least 80% identity, more preferably at least 90% identity, yet more preferably at least 95% identity, to a nucleotide sequence encoding a protein of the invention over the entire coding region. In this regard, polynucleotides which have at least 97% identity are highly preferred, whilst those with at least 98-99% identity are more highly preferred, and those with at least 99% identity are most highly preferred. 10 Other polynucleotides include isolated polynucleotides comprising a nucleotide sequence which has at least 70% identity, preferably at least 80% identity, more preferably at least 90% identity, yet more preferably at least 95% identity, to the sequences of figure 1. In this regard, polynucleotides which have at least 97% identity are highly preferred, whilst those with at 15 least 98-99% identity are more highly preferred, and those with at least 99% identity are most highly preferred. Said polynucleotide can be inserted in a suitable plasmid or recombinant microrganism vector and used for immunisation ( see for example Wolff et. al., Science 247:1465-1468 (1990); Corr et. al., J. Exp. Med. 184:1555-1560 (1996); Doe et. al., Proc. NatI. Acad. Sci. 93:8578-8583 (1996)). 20 The present disclosure also provides a nucleic acid encoding the aforementioned proteins of the present invention and their use in medicine. In a preferred embodiment isolated polynucleotides may be single-stranded (coding or antisense) or double-stranded, and may be DNA (genomic, cDNA or synthetic) or RNA molecules. Additional coding or non-coding 25 sequences may, but need not, be present within a polynucleotide of the present disclosure. In other related embodiments, the present disclosure provides polynucleotide variants having substantial identity to the sequences disclosed herein in figure 2; those comprising at least 70% sequence identity, preferably at least 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98%, or 99% or higher, sequence identity compared to the polynucleotide sequence using the 30 methods described herein, (e.g., BLAST analysis using standard parameters). In a related embodiment, the isolated polynucleotide will comprise a nucleotide sequence encoding a polypeptide that has at least 90%, preferably 95% and above, identity to the amino acid sequence of Figure 1, over the entire length of a sequence of Figure 1; or a nucleotide sequence complementary to said isolated polynucleotide. 35 The present disclosure also contemplates the use of polynucleotides which are complementary to all the above described polynucleotides. 41 The present disclosure also provides for the use of a fragment of a polynucleotide described herein which when administered to a subject has the same immunogenic properties as a polynucleotide of Figure 1. 5 The present disclosure also provides for the use of a polynucleotide encoding an immunological fragment of a protein of Figure 1 as hereinbefore defined. Also contemplated are the use of such fragments that have a level of immunogenic activity of at least about 50%, preferably at least about 70% and more preferably at least about 90% of the level of 10 immunogenic activity of a polypeptide sequence encoded by a polynucleotide sequence set forth in Figure 2. Polypeptide fragments for use according to the present disclosure preferably comprise at least about 5, 10, 15, 20, 25, 50, or 100 contiguous amino acids, or more, including all 15 intermediate lengths, of a polypeptide composition set forth herein, such as those set forth above. Polynucleotides for use in the present disclosure may be obtained, using standard cloning and screening techniques, from a cDNA library derived from mRNA in cells of human 20 preneoplasic or tumour tissue (lung for example), (for example Sambrook et al., Molecular Cloning: A Laboratory Manual, 2 nd Ed., Cold Spring harbor Laboratory Press, Cold Spring harbor, N.Y. (1989)). Polynucleotides can also be obtained from natural sources such as genomic DNA libraries or can be synthesised using well-known and commercially available techniques. 25 There are several methods available and well known to those skilled in the art to obtain full length cDNAs, or extend short cDNAs, for example those based on the method of Rapid Amplification of cDNA ends (RACE) (see, for example, Frohman et al., PNAS USA 85, 8998 9002, 1988). Recent modifications of the technique, exemplified by the Marathon T M 30 technology (Clontech Laboratories Inc.) for example, have significantly simplified the search for longer cDNAs. In the MarathonTM technology, cDNAs have been prepared from mRNA extracted from a chosen tissue and an 'adaptor' sequence ligated onto each end. Nucleic acid amplification (PCR) is then carried out to amplify the 'missing' 5' end of the cDNA using a combination of gene specific and adaptor specific oligonucleotide primers. The PCR reaction 35 is then repeated using 'nested' primers, that is, primers designed to anneal within the amplified product (typically an adaptor specific primer that anneals further 3' in the adaptor sequence and a gene specific primer that anneals further 5' in the known gene sequence). 42 The products of this reaction can then be analysed by DNA sequencing and a full-length cDNA constructed either by joining the product directly to the existing cDNA to give a complete sequence, or carrying out a separate full-length PCR using the new sequence information for the design of the 5' primer. 5 Vectors comprising such DNA, hosts transformed thereby and the truncated or hybrid proteins themselves, expressed as described hereinbelow all form part of the present disclosure. 10 The expression system may also be a recombinant live microorganism, such as a virus or bacterium. The gene of interest can be inserted into the genome of a live recombinant virus or bacterium. Inoculation and in vivo infection with this live vector will lead to in vivo expression of the antigen and induction of immune responses. 15 Therefore, in certain embodiments, polynucleotides encoding immunogenic polypeptides are introduced into suitable mammalian host cells for expression using any of a number of known viral-based systems. In one illustrative embodiment, retroviruses provide a convenient and effective platform for gene delivery systems. A selected nucleotide sequence encoding a polypeptide can be inserted into a vector and packaged in retroviral particles using 20 techniques known in the art. The recombinant virus can then be isolated and delivered to a subject. A number of illustrative retroviral systems have been described (e.g., U.S. Pat. No. 5,219,740; Miller and Rosman (1989) BioTechniques 7:980-990; Miller, A. D. (1990) Human Gene Therapy 1:5-14; Scarpa et al. (1991) Virology 180:849-852; Burns et al. (1993) Proc. Natl. Acad. Sci. USA 90:8033-8037; and Boris-Lawrie and Temin (1993) Cur. Opin. Genet. 25 Develop. 3:102-109. In addition, a number of illustrative adenovirus-based systems have also been described. Unlike retroviruses which integrate into the host genome, adenoviruses persist 43 WO 2006/032472 PCT/EP2005/010184 extrachromosomally thus minimising the risks associated with insertional mutagenesis (Haj-Ahmad and Graham (1986) J. Virol. 57:267-274; Bett et al. (1993) J. Virol. 67:5911 5921; Mittereder et al. (1994) Human Gene Therapy 5:717-729; Seth et al. (1994) J. Virol. 68:933-940; Barr et al. (1994) Gene Therapy 1:51-58; Berkner, K. L. (1988) 5 BloTechniques 6:616-629; and Rich et al. (1993) Human Gene Therapy 4:461-476). Various adeno-associated virus (AAV) vector systems have also been developed for polynucleotide delivery. AAV vectors can be readily constructed using techniques well known in the art, See, e.g., U.S. Pat. Nos. 5,173,414 and 5,139,941; International 10 Publication Nos. WO 92/01070 and WO 93/03769; Lebkowski et al. (1988) Molec. Cell. Biol. 8:3988-3996; Vincent et al. (1990) Vaccines 90 (Cold Spring Harbor Laboratory Press); Carter, B. J. (1992) Current Opinion in Biotechnology 3:533-539; Muzyczka, N. (1992) Current Topics in Microbiol, and Immunol. 158:97-129; Kotin, R. M. (1994) Human Gene Therapy 5:793-801; Shelling and Smith (1994) Gene Therapy 1:165-169; and Zhou 15 et al. (1994) J. Exp. Med. 179:1867-1875. Additional viral vectors useful for delivering the nucleic acid molecules encoding polypeptides for use in the present invention by gene transfer include those derived from the pox family of viruses, such as vaccinia virus and avian poxvirus. By way of example, 20 vaccinia virus recombinants expressing the molecules of interest can be constructed as follows. The DNA encoding a polypeptide is first inserted into an appropriate vector so that it Is adjacent to a vaccinia promoter and flanking vaccinia DNA sequences, such as the sequence encoding thymidine kinase (TK). This vector is then used to transfect cells which are simultaneously infected with vaccinia. Homologous recombination serves to 25 insert the vaccinia promoter plus the gene encoding the polypeptide of interest into the viral genome. The resulting TK.sup.(-) recombinant can be selected by culturing the cells in the presence of 5-bromodeoxyuridine and picking viral plaques resistant thereto. A vaccinia-based infection/transfection system can be conveniently used to provide for 30 inducible, transient expression or coexpression of one or more polypeptides described herein in host cells of an organism. In this particular system, cells are first infected in vitro with a vaccinia virus recombinant that encodes the bacteriophage T7 RNA polymerase. This polymerase displays exquisite specificity in that it only transcribes templates bearing T7 promoters. Following infection, cells are transfected with the polynucleotide or 35 polynucleotides of interest, driven by a T7 promoter. The polymerase expressed in the 44 cytoplasm from the vaccinia virus recombinant transcribes the transfected DNA into RNA which is then translated into polypeptide by the host translational machinery. The method provides for high level, transient, cytoplasmic production of large quantities of RNA and its translation products. See, e.g., Elroy-Stein and Moss, Proc. Natl. Acad. Sci. USA (1990) 5 87:6743-6747; Fuerst et al. Proc. Natl. Acad. Sci. USA (1986) 83:8122-8126. Alternatively, avipoxviruses, such as the fowlpox and canarypox viruses, can also be used to deliver the coding sequences of interest. Recombinant avipox viruses, expressing immunogens from mammalian pathogens, are known to confer protective immunity when 10 administered to non-avian species. The use of an Avipox vector is particularly desirable in human and other mammalian species since members of the Avipox genus can only productively replicate in susceptible avian species and therefore are not infective in mammalian cells. Methods for producing recombinant Avipoxviruses are known in the art and employ genetic recombination, as described above with respect to the production of vaccinia 15 viruses. See, e.g., WO 91/12882; WO 89/03429; and WO 92/03545. Any of a number of alphavirus vectors can also be used for delivery of polynucleotide compositions such as those vectors described in U.S. Patent Nos. 5,843,723; 6,015,686; 6,008,035 and 6,015,694. Certain vectors based on Venezuelan Equine Encephalitis (VEE) 20 can also be used, illustrative examples of which can be found in U.S. Patent Nos. 5,505,947 and 5,643,576. Moreover, molecular conjugate vectors, such as the adenovirus chimeric vectors described in Michael et al. J. Biol. Chem. (1993) 268:6866-6869 and Wagner et al. Proc. Natl. Acad. Sci. 25 USA (1992) 89:6099-6103, can also be used for gene delivery. Additional illustrative information on these and other known viral-based delivery systems can be found, for example, in Fisher-Hoch et al., Proc. Natl. Acad. Sci. USA 86:317-321, 1989; Flexner et al., Ann. N. Y. Acad. Sci. 569:86-103, 1989; Flexner et al., Vaccine 8:17-21, 1990; 30 U.S. Patent Nos. 4,603,112, 4,769,330, and 5,017,487; WO 89/01973; U.S. Patent No. 4,777,127; GB 2,200,651; EP 0,345,242; WO 91/02805; Berkner, Biotechniques 6:616-627, 1988; Rosenfeld et al., Science 252:431-434, 1991; Kolls et al., Proc. Natl. Acad. Sci. USA 91:215-219, 1994; Kass-Eisler et al., Proc. Natl. Acad. Sci. USA 90:11498-11502, 1993; Guzman et al., Circulation 88:2838-2848, 1993; and Guzman et al., Cir. Res. 35 73:1202-1207, 1993. The recombinant live microorganisms described above can be virulent, or attenuated in various ways in order to obtain live vaccines. 45 In certain embodiments, a polynucleotide may be integrated into the genome of a target cell. This integration may be in the specific location and orientation via homologous recombination (gene replacement) or it may be integrated in a random, non-specific location (gene 5 augmentation). In yet further embodiments, the polynucleotide may be stably maintained in the cell as a separate, episomal segment of DNA. Such polynucleotide segments or "episomes" encode sequences sufficient to permit maintenance and replication independent of or in synchronization with the host cell cycle. The manner in which the expression construct is delivered to a cell and where in the cell the polynucleotide remains is dependent 10 on the type of expression construct employed. In another embodiment, a polynucleotide is administered/delivered as "naked" DNA, for example as described in Ulmer et al., Science 259:1745-1749, 1993 and reviewed by Cohen, Science 259:1691-1692, 1993. The uptake of naked DNA may be increased by coating the 15 DNA onto biodegradable beads, which are efficiently transported into the cells. In still another embodiment, a composition of the present invention can be delivered via a particle bombardment approach, many of which have been described. In one illustrative example, gas-driven particle acceleration can be achieved with devices such as those 20 manufactured by Powderject Pharmaceuticals PLC (Oxford, UK) and Powderject Vaccines Inc. (Madison, WI), some examples of which are described in U.S. Patent Nos. 5,846,796; 6,010,478; 5,865,796; 5,584,807; and EP Patent No. 0500 799. This approach offers a needle-free delivery approach wherein a dry powder formulation of microscopic particles, such as polynucleotide or polypeptide particles, are accelerated to high speed within a helium 25 gas jet generated by a hand held device, propelling the particles into a target tissue of interest. In a related embodiment, other devices and methods that may be useful for gas-driven needle-less injection of compositions of the present invention include those provided by 30 Bioject, Inc. (Portland, OR), some examples of which are described in U.S. Patent Nos. 4,790,824; 5,064,413; 5,312,335; 5,383,851; 5,399,163; 5,520,639 and 5,993,412. 46 WO 20061032472 PCT/EP2005/0101184 Vaccines In a preferred embodiment, the immunogenic composition of the Invention is mixed with a 5 pharmaceutically acceptable exciplent, more preferably with an adjuvant to form a vaccine. The vaccines of the present invention are preferably adjuvanted. Suitable adjuvants include an aluminum salt such as aluminum hydroxide gel (alum) or aluminium 10 phosphate, but may also be a salt of calcium, magnesium, Iron or zinc, or may be an Insoluble suspension of acylated tyrosine, or acylated sugars, cationically or anionically derivatized polysaccharldes, or polyphosphazenes. It Is preferred that the adjuvant be selected to be a preferential inducer of either a TH1 or 15 a TH2 type of response. High levels of Th1-type cytokines tend to favor the Induction of cell mediated immune responses to a given antigen, whilst high levels of Th2-type cytokines tend to favour the induction of humoral immune responses to the antigen. It is important to remember that the distinction of Thl and Th2-type immune response is 20 not absolute. In reality an Individual will support an immune response which Is described as being predominantly Th1 or predominantly Th2. However, it is often convenient to consider the families of cytokines In terms of that described In murine CD4 +ve T cell clones by Mosmann and Coffman (Mosmann, T.R. and Coffman, R.L. (1989) THI and TH2 cells: different patterns of lymphokine secretion lead to different functional properties. 25 Annual Review of Immunology, 7, p145-173). Traditionally, Thi-type responses are associated with the production of the INF-y and IL-2 cytoklnes by T-lymphocytes. Other cytokines often directly associated with the induction of Th1 -type immune responses are not produced by T-cells, such as IL-12. In contrast, Th2-type responses are associated with the secretion of 11-4, IL-5, IL-6, IL-10. Suitable adjuvant systems which promote a 30 predominantly Th1 response include: Monophosphoryl lipid A or a derivative thereof, particularly 3-de-O-acylated monophosphoryl lipid A (3D-MPL) (for Its preparation see GB 2220211 A); and a combination of monophosphoryl lipid A, preferably 3-de-O-acylated monophosphoryl lipid A, together with either an aluminium salt (for instance aluminium phosphate or aluminium hydroxide) or an oil-in-water emulsion. In such combinations, 35 antigen and 3D-MPL are contained In the same particulate structures, allowing for more 47 WO 2006/032472 PCT/EP2005/0101184 efficient delivery of antigenic and Immunostimulatory signals. Studies have shown that 3D-MPL is able to further enhance the immunogenicity of an alum-adsorbed antigen {Thoelen et a. Vaccine (1998) 16:708-14; EP 689454-1. 5 An enhanced system involves the combination of a monophosphoryl lipid A and a saponin derivative, particularly the combination of QS21 and 3D-MPL as disclosed In WO 94/00153, or a less reactogenic composition where the QS21 is quenched with cholesterol as disclosed in WO 96/33739. A particularly potent adjuvant formulation involving QS21, 3D-MPL and tocopherol In an oil in water emulsion is described in WO 10 95/17210, and is a preferred formulation. Preferably the vaccine additionally comprises a saponin, more preferably QS21. The formulation may also comprise an oil In water emulsion and tocopherol (WO 95/17210). The present invention also provides a method for producing a vaccine formulation comprising mixing a protein of the present Invention together with a pharmaceutically acceptable exciplent, such as 3D-MPL. Unmethylated 15 CpG containing oligonucleotides (WO 96/02555) are also preferential Inducers of a TH1 response and are suitable for use in the present Invention. Preferred compositions of the Invention are those forming a liposome structure. Compositions where the sterol/immunologically active saponin fraction forms an ISCOM 20 structure also form an aspect of the invention. The ratio of QS21 : sterol will typically be in the order of 1 : 100 to 1 : 1 weight to weight. Preferably excess sterol Is present, the ratio of QS21 : sterol being at least 1 : 2 w/w. Typically for human administration QS21 and sterol will be present in a vaccine 25 in the range of about 1 pg to about 100 pig, preferably about 10 p.g to about 50 p.g per dose. The liposomes preferably contain a neutral lipid, for example phosphatidylcholine, which is preferably non-crystalline at room temperature, for example eggyolk 30 phosphatidylcholine, dloleoyl phosphatidylcholine or dilauryl phosphatdylcholine. The liposomes may also contain a charged lipid which increases the stability of the lipsome QS21 structure for liposomes composed of saturated lipids. In these cases the amount of charged lipid is preferably 1-20% w/w, most preferably 5-10%. The ratio of sterol to phospholipid Is 1-50% (mol/mol), most preferably 20-25%. 35 48 WO 2006/032472 PCT/EP2005/0184 Preferably the compositions of the invention contain MPL (3-deacylated mono-phosphoryl lipid A, also known as 3D-MPL). 30-MPL is known from GB 2 220 211 (Ribi) as a mixture of 3 types of De-O-acylated monophosphoryl lipid A with 4, 5 or 6 acylated chains and is manufactured by Ribi Immunochem, Montana. A preferred form is disclosed In 5 International Patent Application 92/116556. Suitable compositions of the Invention are those wherein liposomes are initially prepared without MPL, and MPL Is then added, preferably as 100 nm particles. The MPL is therefore not contained within the vesicle membrane (known as MPL out). Compositions 10 where the MPL is contained within the vesicle membrane (known as MPL in) also form an aspect of the invention. The antigen can be contained within the vesicle membrane or contained outside the vesicle membrane. Preferably soluble antigens are outside and hydrophobic or lipidated antigens are either contained inside or outside the membrane. 15 The vaccine preparations of the present invention may be used to protect or treat a mammal susceptible to Infection, by means of administering said vaccine via systemic or mucosal route. These administrations may include injection via the intramuscular, intraperitoneal, intradermal or subcutaneous routes; or via mucosal administration to the oral/alimentary, respiratory, genitourinary tracts. Intranasal administration of vaccines for 20 the treatment of pneumonia or otitis media is preferred (as nasopharyngeal carriage of pneumococci can be more effectively prevented, thus attenuating infection at its earliest stage). Although the vaccine of the Invention may be administered as a single dose, components thereof may also be co-administered together at the same time or at different times (for instance pneumococcal polysaccharides could be administered separately, at 25 the same time or 1-2 weeks after the administration of any bacterial protein component of the vaccine for optimal coordination of the immune responses with respect to each other). For co-administration, the optional Th1 adjuvant may be present In any or all of the different administrations, however it is preferred if it Is present in combination with the bacterial protein component of the vaccine, in addition to a single route of administration, 30 2 different routes of administration may be used. For example, polysaccharides may be administered IM (or ID) and bacterial proteins may be administered IN (or ID). In addition, the vaccines of the invention may be administered IM for priming doses and IN for booster doses. 35 The amount of conjugate antigen in each vaccine dose is selected as an amount which induces an immunoprotective response without significant, adverse side effects in typical 49 WO 2006/032472 PCT/EP2005/10184 vaccines. Such amount will vary depending upon which specific immunogen is employed and how it is presented. Generally, It is expected that each dose will comprise 0.1-1100 sg of polysaccharlde, preferably 0.1-50 sg for polysaccharide conjugates, preferably 0.1-10 g, more preferably 1-10 j.g, of which 1 to 5 I.g is a more preferable range. 5 The content of protein antigens in the vaccine will typically.be in the range 1-100pg, preferably 5-50gg, most typically in the range 5 - 25pg. Following an initial vaccination, subjects may receive one or several booster immunizations adequately spaced. 10 Vaccine preparation is generally described in Vaccine Design ("The subunit and adjuvant approach" (eds Powell M.F. & Newman M.J.) (1995) Plenum Press New York). Encapsulation within liposomes is described by Fullerton, US Patent 4,235,877. The vaccines of the present invention may be stored In solution or lyophilized. Preferably 15 the solution is lyophilized In the presence of a sugar such as sucrose, trehalose or lactose. It is still further preferable that they are lyophilized and extemporaneously reconstituted prior to use. Lyophilizing may result in a more stable composition (vaccine) and may possibly lead to higher antibody titers in the presence of 3D-MPL and in the absence of an aluminium based adjuvant. 20 Antibodies and passive immunisation Another aspect of the invention Is a method of preparing an Immune globulin for use in prevention or treatment of staphylococcal Infection comprising the steps of immunising a 25 recipient with the vaccine of the invention and isolating Immune globulin from the recipient. An immune globulin prepared by this method is a further aspect of the invention. A pharmaceutical composition comprising the immune globulin of the invention and a pharmaceutically acceptable carrier is a further aspect of the Invention which could be used in the manufacture of a medicament for the treatment or prevention of 30 staphylococcal disease. A method for treatment or prevention of staphylococcal infection comprising a step of administering to a patient an effective amount of the pharmaceutical preparation of the invention is a further aspect of the Invention. Inocula for polyclonal antibody production are typically prepared by dispersing the 35 antigenic composition in a physiologically tolerable diluent such as saline or other 50 adjuvants suitable for human use to form an aqueous composition. An immunostimulatory amount of inoculum is administered to a mammal and the inoculated mammal is then maintained for a time sufficient for the antigenic composition to induce protective antibodies. The antibodies can be isolated to the extent desired by well known techniques such as affinity chromatography (Harlow and Lane Antibodies; a laboratory manual 1988). Antibodies can include antiserum preparations from a variety of commonly used animals e.g. goats, primates, donkeys, swine, horses, guinea pigs, rats or man. The animals are bled and serum recovered. An immune globulin produced in accordance with the present invention can include whole antibodies, antibody fragments or subfragments. Antibodies can be whole immunoglobulins of any class e.g. IgG, IgM, IgA, IgD or IgE, chimeric antibodies or hybrid antibodies with dual specificity to two or more antigens of the invention. They may also be fragments e.g. F(ab')2, Fab', Fab, Fv and the like including hybrid fragments. An immune globulin also includes natural, synthetic or genetically engineered proteins that act like an antibody by binding to specific antigens to form a complex. A vaccine of the present invention can be administered to a recipient who then acts as a source of immune globulin, produced in response to challenge from the specific vaccine. A subject thus treated would donate plasma from which hyperimmune globulin would be obtained via conventional plasma fractionation methodology. The hyperimmune globulin would be administered to another subject in order to impart resistance against or treat 6 staphylococcal infection. Hyperimmune globulins of the invention are particularly useful for treatment or prevention of staphylococcal disease in infants, immune compromised individuals or where treatment is required and there is no time for the individual to produce antibodies in response to vaccination. o Also described herein is a pharmaceutical composition comprising two of more monoclonal antibodies (or fragments thereof; preferably human or humanised) reactive against at least two constituents of the immunogenic composition of the invention, which could be used to treat or prevent infection by Gram positive bacteria, preferably staphylococci, more preferably S. aureus or S. epidermidis. 51 WO 2006/032472 PCT/EP2005/01 84 Such pharmaceutical compositions comprise monoclonal antibodies that can be whole immunoglobulins of any class e.g. IgG, IgM, IgA, igD or IgE, chimeric antibodies or hybrid antibodies with specificity to two or more antigens of the Invention. They may also be fragments e.g. F(ab')2, Fab', Fab, Fv and the like including hybrid fragments. 5 Methods of making monoclonal antibodies are well known in the art and can include the fusion of splenocytes with myeloma cells (Kohler and Milstein 1975 Nature 256; 495; Antibodies - a laboratory manual Harlow and Lane 1988). Alternatively, monoclonal Fv fragments can be obtained by screening a suitable phage display library (Vaughan TJ et 10 al 1998 Nature Biotechnology 16; 535). Monoclonal antibodies may be humanised or part humanised by known methods. Methods 15 The invention also encompasses method of making the Immunogenic compositions and vaccines of the invention. A preferred process of the Invention, is a method to make a vaccine comprising the steps of mixing antigens to make the immunogenic composition of the invention and adding a 20 pharmaceutically acceptable excipient. Methods of treatment The Invention also encompasses method of treatment or staphylococcal infection, 25 particularly hospital acquired nosocomial infections. This immunogenic composition or vaccine of the invention is particularly advantageous to use in cases of elective surgery. Such patients will know the date of surgery in advance and could be inoculated In advance. Since it is not know whether the patient will be 30 exposed to S.aureus or S. ep/dermidis Infection, It is preferred to inoculate with a vaccine of the invention that protects against both, as described above. Preferably adults over 16 awaiting elective surgery are treated with the immunogenic compositions and vaccines of the invention. 35 It is also advantageous to inoculate health care workers with the vaccine of the invention. The vaccine preparations of the present invention may be used to protect or treat a mammal susceptible to infection, by means of administering said vaccine via systemic or 52 WO 2006/032472 PCT/EP2005/0)10184 mucosal route. These administrations may include injection via the intramuscular, intraperitoneal, intradermal or subcutaneous routes; or via mucosal administration to the oral/alimentary, respiratory, genitourinary tracts. 5 The amount of antigen in each vaccine dose is selected as an amount which induces an immunoprotective response without significant, adverse side effects In typical vaccines. Such amount will vary depending upon which specific immunogen is employed and how it Is presented. The protein content of the vaccine will typically be in the rangel -100Itg, preferably 5-50ltg, most typically in the range 10 - 25pg. Generally, it is expected that 10 each dose will comprise 0.1-100 pg of polysaccharide where present, preferably 0.1-50 Ig, preferably 0.1-10 pg, of which 1 to 5 pg is the most preferable range. An optimal amount for a particular vaccine can be ascertained by standard studies involving observation of appropriate immune responses in subjects. Following an Initial vaccination, subjects may receive one or several booster immunisations adequately 15 spaced. Although the vaccines of the present Invention may be administered by any route, administration of the described vaccines into the skin (ID) forms one embodiment of the present invention. Human skin comprises an outer "horny" cuticle, called the stratum 20 corneum, which overlays the epidermis. Underneath this epidermis is a layer called the dermis, which in turn overlays the subcutaneous tissue. Researchers have shown that injection of a vaccine Into the skin, and in particular the dermis, stimulates an immune response, which may also be associated with a number of additional advantages. Intradermal vaccination with the vaccines described herein forms a preferred feature of 25 the present invention. The conventional technique of intradermal injection, the "mantoux procedure", comprises steps of cleaning the skin, and then stretching with one hand, and with the bevel of a narrow gauge needle (26-31 gauge) facing upwards the needle is inserted at an angle of 30 between 10-15*. Once the bevel of the needle is Inserted, the barrel of the needle is lowered and further advanced whilst providing a slight pressure to elevate it under the skin. The liquid is then injected very slowly thereby forming a bleb or bump on the skin surface, followed by slow withdrawal of the needle. 53 WO 2006/032472 PCT/EP2005/010184 More recently, devices that are specifically designed to administer liquid agents into or across the skin have been described, for example the devices described in WO 99/34850 and EP 1092444, also the jet Injection devices described for example in WO 01/13977; US 5,480,381, US 5,599,302, US 5,334,144, US 5,993,412, US 5,649,912, US 5,569,189, 5 US 5,704,911, US 5,383,851, US 5,893,397, US 5,466,220, US 5,339,163, US 5,312,335, US 5,503,627, US 5,064,413, US 5,520, 639, US 4,596,556, US 4,790,824, US 4,941,880, US 4,940,460, WO 97/37705 and WO 97/13537, Alternative methods of Intradermal administration of the vaccine preparations may include conventional syringes and needles, or devices designed for ballistic delivery of solid vaccines (WO 99/27961), or 10 transdermal patches (WO 97/48440; WO 98/28037); or applied to the surface of the skin (transdermal or transcutaneous delivery WO 98/20734 ; WO 98/28037). When the vaccines of the present invention are to be administered to the skin, or more specifically Into the dermis, the vaccine is in a low liquid volume, particularly a volume of 15 between about 0.05 ml and 0.2 ml. The content of antigens In the skin or intradermal vaccines of the present Invention may be similar to conventional doses as found in intramuscular vaccines (see above). However, it is a feature of skin or Intradermal vaccines that the formulations may be "low 20 dose". Accordingly the protein antigens in "low dose" vaccines are preferably present in as little as 0.1 to 10 g, preferably 0.1 to 5 lg per dose; and the polysaccharide (preferably conjugated) antigens may be present in the range of 0.01-1pg, and preferably between 0.01 to 0.5 g of polysaccharlde per dose. 25 As used herein, the term "intradermal delivery" means delivery of the vaccine to the region of the dermis in the skin. However, the vaccine will not necessarily be located exclusively in the dermis. The dermis is the layer in the skin located between about 1.0 and about 2.0 mm from the surface in human skin, but there is a certain amount of variation between individuals and in different parts of the body. In general, it can be expected to reach the 30 dermis by going 1.5 mm below the surface of the skin. The dermis Is located between the stratum corneum and the epidermis at the surface and the subcutaneous layer below. Depending on the mode of delivery, the vaccine may ultimately be located solely or primarily within the dermis, or it may ultimately be distributed within the epidermis and the dermis. 35 54 A preferred embodiment of the invention is a method of preventing or treating staphylococcal infection or disease comprising the step of administering the immunogenic composition or vaccine of the invention to a patient in need thereof. 5 In a preferred embodiment, the patient is awaiting elective surgery. A further preferred embodiment of the invention is a use of the immunogenic composition of the invention in the manufacture of a vaccine for treatment or prevention of staphylococcal infection or disease, preferably post-surgery staphylococcal infection. 10 The term 'staphylococcal infection' encompasses infection caused by S. aureus and/or S. epidermidis and other staphylococcal strains capable of causing infection in a mammalian, preferably human host. 15 The terms "comprising", "comprise" and "comprises" herein are intended by the inventors to be optionally substitutable with the terms "consisting of", "consist of" and "consists of", respectively, in every instance and are not intended to exclude additional features. All references or patent applications cited within this patent specification are incorporated by 20 reference herein. The discussion of prior publications and other prior knowledge does not constitute an admission that such material was published, known or part of the common general knowledge. In order that this invention may be better understood, the following examples are set forth. 25 These examples are for purposes of illustration only, and are not to be construed as limiting the scope of the invention in any manner. 55 WO 2006/032472 PCT/EP2005/010184 Examples Example I Construction of Plasmid to Express Recombinant proteins 5 A: Clonlnq. Appropriate restriction sites engineered into oligonucleotides specific for the staphylococcal gene permitted directional cloning of the PCR product into the E.coli expression plasmid pET24d or pQE-30 such that a protein could be expressed as a fusion protein containing a (His)6 affinity chromatography tag at the N- or C-terminus. 10 The primers used were: Alpha toxin - S'-CGCGGATCCGCAGATTCTGATATTAATTAAAAC-3' and 5'CCCAAGCTTTTAATTTGTCATTTCTTCTTTTTC- 3 ' EbpS - 5'-CGCGGATCCGCTGGGTCTAATAATTTTAAAGATG-3' and 15 5'CCCAAGCTTTTATGGAATAACGATTTGTTG-3' CIfA - 5'-CGCGGATCCAGTGAAAATAGTGTTACGCAATC-3' and 5'CCCAAGCTTTTACTCTGGAATTGGTTCAATTTC-3' FnbpA - 5'-CGCGGATCCACACAAACAACTGCAACTAACG-3' and 5'CCCAAGCTTTTATGCTTTGTGATTCTTTTTCAAAC 3 ' 20 Sbi

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5'-CGCGGATCCAACACGCAACAAACTTC-3' and 5'GGAACTGCAGTTATTTCCAGAATGATAATAAATTAC-3' SdrC

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5'-CGCGGATCCGCAGAACATACGAATGGAG-3' and 5'CCCAAGCTT1TATGTTTCTTCTTCGTAGTAGC-3' SdrG

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5'-CGCGGATCCGAGGAGAATTCAGTACAAG-3' and 25 5'CCCAAGCTTTTATTCGTCATCATAGTATCCG-3' Ebh

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5'-AAAAGTACTCACCACCACCACCACC-3' and 5'AAAAGTACTCACTTGATTCATCGCTTCAG-3' Aaa - 5'-GCGCGCCATGGCACAAGCTTCTACACAACATAC-3' and 5'GCGCGCTCGAGATGGATGAATGCATAGCTAGA-3' 30 IsaA - 5'-GCATCCATGGCACCATCACCATCACCACGAAGTAAACGTTGATCAAGC-3' and 5'-AGCACTCGAGTTAGAATCCCCAAGCACCTAAACC-3' HarA - 5'-GCACCCATGGCAGAAAATACAAATACTTC-3' and 5'TTTTCTCGAGCATTTTAGATTGACTAAGTTG- 3 ' Autolysin glucosaminidase - 5'-CAAGTCCCATGGCTGAGACGACACAAGATCAAC- 3 ' 35 and 5'-CAGTCTCGAGTTTTACAGCTGl i I I IGGTTG- 3 56 WO 2006/032472 PCT/EP2005/010184 Autolysin amidase - 5'-AGCTCATATGGCTTATACTGTTACTAAACC-3' and 5'GCGCCTCGAGTTTATATTGTGGGATGTCG-3' lsdA - 5'-CAAGTCCCATGGCAACAGAAGCTACGAACGCAAC-3' and 5'ACCAGTCTCGAGTAATTCTTTAGCTTTAGAGCTTG-3' 5 IsdB - 5'-TATTCTCGAGGCTTTGAGTGTGTCCATCATTTG-3' and 5' GAAGCCATGGCAGCAGCTGAAGAAACAGGTGG-3' MRPII - 5'-GATTACACCATGGTTAAACCTCAAGCGAAA-3' and 5'AGGTGTCTCGAGTGCGATTGTAGCTTCATT-3' 10 The PCR products were first introduced Into the pGEM-T cloning vector (Novagen) using ToplO bacterial cells, according to the manufacturer's Instructions. This intermediate construct was made to facilitate further cloning into an expression vector. Transformants containing the DNA insert were selected by restriction enzyme analysis. Following digestion, a -20pl aliquot of the reaction was analyzed by agarose gel electrophoresis 15 (0.8 % agarose in a Tris-acetate-EDTA (TAE) buffer). DNA fragments were visualized by UV illumination after gel electrophoresis and ethidium bromide staining. A DNA molecular size standard (1 Kb ladder, Life Technologies) was electrophoresed in parallel with the test samples and was used -to estimate the size of the DNA fragments. Plasmid purified from selected transformants for each cloning was then sequentially digested to completion 20 with appropriate restriction enzymes as recommended by the manufacturer (Life Technologies). The digested DNA fragment was then purified using silica gel-based spin columns prior to ligation with the pET24d or pQE-30 plasmid. Cloning of Ebh (H2 fragment), AaA, IsdA, isdB, HarA, Ati-amidase, Ati-glucosamine, MRP; lsaA was carried out using the pET24d plasmid and cloning of CIfA, SdrC, SdrE, FnbpA, SdrG/Fbe, alpha 25 toxin and Sbi were carried out using the pQE-30 plasmid. B: Production of expression vector. To prepare the expression -plasmid pET24d or pQE-30 for ligation, It was similarly digested to completion with appropriate restriction enzymes. An approximately 5-fold 30 molar excess of the digested fragments to the prepared vector was used to program the ligation reaction. A standard -20 pl ligation reaction (-16 0 C, -16 hours), using methods well known in the art, was performed using T4 DNA ligase (-2.0 units / reaction, Life Technologies). An aliquot of the ligation (-5 pl) was used to transform M15(pREP4) or BT21::DE3 electro-competent cells according to methods well known in the art. Following 35 a -2-3 hour outgrowth period at 37 0 C in -1.0 ml of LB broth, transformed cells were plated on LB agar plates containing ampicillin (100 pg/ml) and/or kanamycin (30pg/ml). 57 WO 2006/032472 PCT/EP2005/010184 Antibiotics were included in the selection. Plates were incubated overnight at 370C for -16 hours. Individual ApR/KanR colonies were picked with sterile toothpicks and used to "patch" inoculate fresh LB ApR/KanR plates as well as a -1.0 ml LB Ap/ Kan broth culture. Both the patch plates and the broth culture were incubated overnight at 37*C In either a 5 standard incubator (plates) or a shaking water bath. A whole cell-based PCR analysis was employed to verify that transformants contained the DNA insert. Here, the -1.0 ml overnight LB Ap/Kan broth culture was transferred to a 1.5 ml polypropylene tube and the cells collected by centrifugation in a Beckmann microcentrifuge (-3 min., room temperature, -12,000 X g). The cell pellet was suspended in -200pl of sterile water and a 10 -10pl aliquot used to program a -50pl final volume PCR reaction containing both forward and reverse amplification primers. The initial 950C denaturation step was increased to 3 minutes to ensure thermal disruption of the bacterial cells and liberation of plasmid DNA. An ABI Model 9700 thermal cycler and a 32 cycle, three-step thermal amplification profile, i.e. 950C, 45sec; 55-580C, 45sec, 720C, 1min., were used to amplify the BASB203 15 fragment from the lysed transformant samples. Following thermal amplification, a -20pl aliquot of the reaction was analyzed by agarose gel electrophoresis (0.8 % agarose in a Tris-acetate-EDTA (TAE) buffer). DNA fragments were visualised by UV illumination after gel electrophoresis and ethidlum bromide staining. A DNA molecular size standard (1 Kb ladder, Life Technologies) was electrophoresed in parallel with the test samples and was 20 used to estimate the size of the PCR products. Transformants that produced the expected size PCR product were identified as strains containing a protein expression construct. Expression plasmid containing strains were then analyzed for the inducible expression of recombinant protein. 25 C: Expression Analysis of PCR-Positive Transformants. An aliquot of the overnight seed culture (-1.0 ml) was inoculated into a 125 ml erlenmeyer flask containing -25 ml of LB Ap/Kan broth and was grown at 37 0C with shaking (-250 rpm) until the culture turbidity reached O.D.600 of -0.5, I.e. mId-log phase (usually about 30 1.5 - 2.0 hours). At this time approximately half of the culture (-12,5 ml) was transferred to a second 125 ml flask and expression of recombinant protein induced by the addition of IPTG (1.0 M stock prepared In sterile water, Sigma) to a final concentration of 1.0 mM. Incubation of both the IPTG-induced and non-induced cultures continued for an additional -4 hours at 37 *C with shaking. Samples (-1.0 ml) of both induced and non-Induced 35 cultures were removed after the Induction period and the cells collected by centrifugation in a microcentrifuge at room temperature for -3 minutes. Individual cell pellets were 58 WO 2006/032472 PCT/EP2005/010184 suspended in -50pl of sterile water, then mixed with an equal volume of 2X Laemelli SDS-PAGE sample buffer containing 2-mercaptoethanol, and placed In boiling water bath for -3 min to denature protein. Equal volumes (-15pI) of both the crude IPTG-induced and the non-induced cell lysates were loaded onto duplicate 12% Tris/glycine 5 polyacrylamide gel (1 mm thick Mini-gels, Novex). The induced and non-induced lysate samples were electrophoresed together with prestained molecular weight markers (SeeBlue, Novex) under conventional conditions using a standard SDS/Tris/glycine running buffer (BioRad). Following electrophoresis, one gel was stained with commassie brilliant blue R250 (BioRad) and then destained to visualize novel IPTG-inducible 10 protein(s) .The second gel was electroblotted onto a PVDF membrane (0.45 micron pore size, Novex) for -2 hrs at 4 'C using a BloRad Mini-Protean Il blotting apparatus and Towbin's methanol (20 %) transfer buffer. Blocking of the membrane and antibody Incubations were performed according to methods well known in the art.- A monoclonal anti-RGS (His)3 antibody, followed by a second rabbit anti-mouse antibody conjugated to 15 HRP (QiaGen), were used to confirm the expression and identity of the recombinant protein, Visualization of the anti-His antibody reactive pattern was achieved using either an ABT insoluble substrate or using Hyperfilm with the Amersham ECL chemiluminescence system. 20 Example 2: Production of Recombinant Protein Bacterial strain A recombinant expression strain of E. coli M15(pREP4) containing a plasmid (pQE30) or BL21::DE3 containing plasmid pET24d encoding staphylococcal protein was used to produce cell mass for purification of recombinant protein. 25 Media The fermentation medium used for the production of recombinant protein consisted of 2X YT broth (Difco) containing 100pg/ml Ap and/or 30 pg/mI Km. Antifoam was added to medium for the fermentor at 0.25 mi/L (Antifoam 204, Sigma). To induce expression of the 30 recombinant protein, IPTG (Isopropyl B-D-Thiogalactopyranoside) was added to the fermentor (1 mM, final). Production of recombinant proteins 35 Under native conditions 59 WO 2006/032472 PCT/EP2005/010184 IPTG was added at a final concentration of 1mM and the culture was grown for 4 additional hours. The culture was then centrifuged at 6,000 rpm for 10 minutes and the pellet was resuspended in phosphate buffer (50mM K2HPO4, KH2PO4 pH 7) including a protease Inhiblor cocktail. This sample was subjected to French pressure lysis using 1500 5 bar pressure ( 2 runs). After centrifugation for 30 minutes at 15,000 rpm, the supernatant was reserved for further purification and NaCl was added to 0.5M. The sample was then loaded on a NI-NTA resin (XK 16 column Pharmacia, Ni-NTA resin Qlagen) conditioned In 50mM K2HPO4, KH2PO4 pH 7. After loading the sample, the column was washed with Buffer A (0.2M NaH2PO4 pH7, 0.3M NaCl, 10% glycerol). To elute bound protein, a step 10 gradient ws used where different proportions of buffer B (0.2M NaH2PO4 pH7, 0.3M NaCl, 10% glycerol and 200mM imidazole) were added to buffer A. The proportion of buffer B was gradually increased from 10% to 100%. After purification, eluted fraction containing the protein were pooled, concentrated and dialysed against 0.002M KH2PO4/K2HP04 pH7, 0.15M NaCl. 15 This method was used to purify CifA, SdrG, IsdA, IsaB, HarA, Ati-glucosamine and alpha toxin. Under denaturing conditions 20 IPTG was added at a final concentration of 1mM and the culture was grown for 4 additional hours. The culture was then centrifuged at 6,000 rpm for 10 minutes and the pellet was resuspended in phosphate buffer (50mM K2HPO4, KH2PO4 pH 7) Including a protease inhiblor cocktail. This sample was subjected to French pressure lysis using 1500 bar pressure ( 2 runs). After centrifugation for 30 minutes at 15,000 rpm, the pellet was 25 washed with phosphate buffer including 1 M urea. The sample was centrifuged for 30 mins at 15000rpm and the pellet was resuspended In 8M urea, 0.1M NaH2PO4, 0.5M NaCl, 0.01 M Tris-Hcl pH8 and kept overnight at room temperature. The sample was centrifuged fro 20 minutes at 15000rpm and the supernatant was collected for further purification. The sample was then loaded on a Ni-NTA resin (XK 16 column Pharmacla, NI-NTA resin 30 Qiagen) conditioned in 8M urea, 0.1M NaH2PO4, 0.5M NaCl, 0.01M TrIs-Hcl pH8. After passsage of the flowthrough, the column was washed succesively with buffer A (8M Urea, 0.1MNaH2PO4, 0,5M NaCI, 0.01M Tris, pH 8.0), buffer C (8M Urea, 0.1MNaH2PO4, 0.5M NaCl, 0.01M Tris, pH 6.3), buffer D (8M Urea, 0.1MNaH2PO4, 0.5M NaCl, 0.01M Tris, pH 5.9) and buffer E (8M Urea, O.1MNaH2PO4, 0.5M NaCl, 0.01M Tris, pH 4.5). The 35 recombinant protein was eluted from the column during washes with buffer D and E. The denatured, recombinant protein could be solubilized in a solution devoid of urea. For this 60 WO 2006/032472 PCTEP205/019184 purpose, denatured protein contained in 8M urea was successively dialyzed against 4M urea, 0.1MNa2PO4, 0.01M Tris-HCI, pH7.1, 2M urea, 0.1 M NaH2PO4, 0.01M Tris-HCI, pH 7.1, 0.5M arginine and 0.002M KH2PO4/K2HPO4 pH7.1, 0.15M NaCI, 0.5M argihine. 5 This method was used to purify Ebh (H2 fragment), AaA, SdrC, FnbpA, Sbi, Atl-amidase and IsaA. The purified proteins were analysed by SDS-PAGE. The results for one protein purified under native conditions (alpha toxin) and one protein purified under denaturing conditions 10 (SdrC) are shown in Figures 3 and 4. Example 3 Preparation of Polysaccharides PIA (PNAG) is prepared as described In Joyce et al 2003, Carbohydrate Research 338; 15 903-922. Type 5 and type 8 polysaccharides is extracted from S.aureus as described in infection and Immunity 58(7); 2367. 20 Activation and coupling chemistry: Native polysaccharide is dissolved in NaCl 2M or in water. The optimal polysaccharide concentration Is evaluated for all the serotypes and is between 2mg/ml and 5mg/ml. 25 From a 100 mg/ml stock solution in acetonitrile ,CDAP (CDAP/PS ratio:0.75 mg/mg PS) is added to the polysaccharde solution.1.5 minute later, 0.2M triethylamine is added to obtain the specific activation pH (pH 8.5-10.0). The activation of the polysaccharide is performed at this pH during 2 minutes at 25 0 C. The carrier protein Is added to the activated polysaccharide in an amount sufficient to give a 1/1 molar ratio and the coupling 30 reaction is performed at the specific pH for 1 hour. Then, the reaction is quenched with glycine for 30 minutes at 25 0 C and overnight at 4 0 C. The conjugates are purified by gel filtration using a Sephacryl 500HR gel filtration column 35 equilibrated with 0.2M NaCI. 61 WO 2006/032472 PCT/EP2005/010184 The carbohydrate and protein contents of the eluted fractions are determined .The conjugates are pooled and sterile filtered on a 0.22pm sterilizing membrane. The PS/Protein ratios in the conjugate preparations are determined. 5 Characterlsation: Each conjugate is characterised for protein and polysaccharide content. The polysaccharide content is measured by the Resorcinol test and the protein content by the Lowry test. The final PS/PD ratio(w/w) is determined by the ratio of the concentrations. 10 Residual DMAP content (ng/pg PS): The activation of the polysaccharide with CDAP Introduces a cyanate group in the polysaccharide and DMAP (4-dimethylamino-pyridin) is liberated. The residual DMAP content Is determined by a specific assay developed and validated at GSK. 15 Free polysaccharide content (%): The free polysaccharide content on conjugates kept at 4 0 C or stored 7 days at 37 0 C is determined on the supernatant obtained after incubation with a-carrier antibodies and saturated ammonium sulfate, followed by a centrifugation. 20 An a-PS/a-PS ELISA is used for the quantification of free polysaccharide in the supernatant. The absence of conjugate is also controlled by an a-carrier/a-PS ELISA. Example 4 Formulation 25 Adjuvant compositions Protein, either individually or together, from the above examples may be formulated with the staphylococcal polysaccharide combination and as adjuvant, the formulation may comprise a mixture of 3 de -0-acylated monophosphoryl lipid A (3D-MPL) and aluminium 30 hydroxide, or of 3 de -0-acylated monophosphoryl lipid A (3D-MPL) and aluminium phosphate, or 3D-MPL and/or QS21 optionally in an oll/water emulsion, and optionally formulated with cholesterol, or aluminium salt alone, preferably aluminium phosphate. 3D-MPL: is a chemically detoxified form of the lipopolysaccharide (LPS) of the Gram 35 negative bacteria Salmonella minnesota. 62 WO 20061032472 PCT/EP2005/010184 Experiments performed at GSK Biologicals have shown that 3D-MPL combined with various vehicles strongly enhances both the humoral and a TH1 type of cellular immunity. QS21: is one saponin purified from a crude extract of the bark of the Quillaja Saponarla 5 Molina tree, which has a strong adjuvant activity: it activates both antigen-specific lymphoproliferation and CTLs to several antigens. Vaccine containing an antigen of the Invention containing 3D-MPL and alum may be prepared in analogous manner to that described in W093/19780 or 92/16231. 10 Experiments performed at GSK Biologicals have demonstrated a clear synergistic effect of combinations of 3D-MPL and QS21 In the induction of both humoral and TH1 type cellular immune responses. Vaccines containing an antigen such antigens are described in US 5750110. 15 An oil/water emulsion may be composed of 2 oils (a tocopherol and squalene), and of PBS containing Tween 80 as emulsifier. The emulsion comprised 5% squalene 5% tocopherol 0.4% Tween 80 and had an average particle size of 180 nm and is known as SB62 (see WO 95/17210). 20 Experiments performed at GSK Biologicals have proven that the adjunction of this O/W emulsion to MPL/QS2I further Increases their immunostimulant properties. Preparation of emulsion SB62 (2 fold concentrate) Tween 80 Is dissolved in phosphate buffered saline (PBS) to give a 2% solution In the 25 PBS. To provide 100 ml two fold concentrate emulsion 5g of DL alpha tocopherol and 5ml of squalene are vortexed to mix thoroughly. 90ml of PBS/Tween solution is added and mixed thoroughly. The resulting emulsion is then passed through a syringe and finally microfluldised by using an M110S microfluldics machine. The resulting oil droplets have a size of approximately 180 nm. 30 Example 5 Animal experiments. Female CD-1 mice, 8 to 10 weeks old, are obtained from Charles River Laboratories, 35 Kingston, Mass. For lethality studies, five groups of 9 to 11 CD-1 mice are challenged intraperitoneally (i.p.) with serial dilutions of S. aureus grown on CSA plates. The inocular 63 WO 2006/032472 PCT/EP2005/010184 sizes range from ~1010 to 10 CFU/mouse. Mortality is assessed on a daily basis for 3 days. The 50% lethal doses (LD5os) is estimated by using a probit model of the dose response relationship. The null-hypothesis of common LD 50 s was tested by the likelihood ratio test. Sublethal bacteremia is initiated by challenging groups of 8 to 20 mice by the 5 intravenous (l.v.) route with - 2 x 106 CFU/mouse or by the i.p. route with - 2 x 107 CFU/mouse. After inoculation separate groups of animals are bled from the tail at specified times, and the bacteremia levels are estimated by quantitative plate counts performed in duplicate on tryptic soy agar plates with 5% sheep blood (Becton Dickinson Microbiology Systems). Statistical significance is determined with the Welch modification 10 of the unpaired Stutent's t test. Example 6 General Methodology of Determining Antibody Responses in Various Mammals The sera were tested for IgG antibodies to the staphylococcal polysaccharldes by an 15 ELISA. Briefly, purified capsular polysaccharides from ATCC (Rockville, Md, 20852) are coated at 25 jxg/ml in phosphate buffered saline (PBS) on high binding microtitre plates (Nunc Maxisorp) overnight at 4 C. The plates are blocked with 10% fetal calf serum (FCS), 1 hour at 37 C. Serum samples are pre-incubated with the 20 p.g/ml cell-wall polysaccharide (Statens Serum Institute, Copenhagen) and 10% FCS at room 20 temperature for 30 minutes to neutralize antibodies to this antigen. The samples are then diluted two-fold on the microplate in 10% FCS in PBS, and equilibrated at room temperature for 1 hour with agitation. After washing, the microplates are equilibrated with peroxidase labelled anti-human IgG Fc monoclonal antibody (HP6043-HRP, Stratech Scientific Ltd) diluted 1:4000 in 10% FCS in PBS for 1 hour at room temperature with 25 agitation. The ELISA Is performed to measure rat IgG using Jackson ImmunoLaboratories Inc. peroxidase-conjugated AffiniPure Goat anti-Rat IgG (H+L) (code 112-035-003) at 1:5000. The titration curves are referenced to standard sera for each serotype using logistic log comparison by SoftMax Pro. The polysaccharide concentrations used to coat the ELISA plate are 10-20 4g/ml. The color is developed using 4 mg OPO (Sigma) per 10 30 ml pH 4.5 0.1 M citrate buffer with 14 Id H202 for 15 minutes in the dark at room temperature. The reaction Is stopped with 50 pl HCI, and the optical density Is read at 490 nm relative to 650 nm. IgG concentrations are determined by reference of titration points to the calibration curve modeled using a 4-parameter logistic log equation calculated by SoftMax Pro software. 64 WO 2006/032472 PCT/EP2005/010184 The ELISA to measure the murine and rat IgG to the staphylococcal polysaccharldes is similar with the following exceptions. Jackson ImmunoLaboratories Inc. peroxidase conjugated affiniPure Goat Anti-mouse igG (H+L) and AffiniPure Goat Anti-rat IgG (H+L) were employed to detect bound lgG. 5 HP6043-HRP reacts equally with human and Rhesus purified IgG, and so this reagent is used for Rhesus antiserum. The protein ELISA is performed similarly to the polysaccharlde ELISA with the following modifications. The protein Is coated overnight at 2.0 pg/ml in PBS. The serum samples are diluted in PBS containing 10% foetal calf serum and 0.1 % polyvinyl alcohol. Bound 10 human antibody is detected using Sigma Peroxidase-conjugated goat affinity purified antibody to Human IgG Fc (reference A-2290). Example 7 Opsonophagocytosis assay. 15 The In vitro opsonophagocytosic killing of S.aureus by human polymorphonuclear leykocytes (PMNs) is performed as described in Xu et al 1992 Infect. Immun. 60; 1358. Human PMNs are prepared from heparinized blood by sedimentation in 3% dextran T 250. The opsonic reaction mixture (1 ml) contains - 106 PMNs In RPMI 1640 medium supplemented with 10% heat-inactivated fetal calf serum, ~ 106 CFU of S-aureus, and 0.1 20 ml of the test serum or 1gG preparation. Hyperimmunized rabbit serum is used as a positive control, and 0.1 ml of nonimmune rabbit serum was used as a complete source for the igG samples. The reaction mixtures are Incubated at 37 0 C, and bacterial samples are transferred at 0, 60, and 120 min into water and subsequently diluted, spread on tryptic soy agar plates, and incubated at 370C for bacterial count after overnight 25 Incubation. Example 8 Immunogenicity of staphylococcal proteins in mice and rabbits 30 Animals were immunized with purified staphylococcal proteins in order to generate hyper Immune sera. Mice were immunized three times (days 0, 14 and 28) with 10 pg of each proteins adjuvanted in Specol. Rabbits were Immunized three times (days 0, 21 and 42) 65 WO 2006/032472 PCTIEP2005/010184 with 20 pg of each proteins adjuvanted In Specol. Immune sera were collected and evaluated in anti-protein and anti-killed whole cells ELISA. Anti-Protein ELISA: 5 The purified protein was coated at 1 pg/ml In phosphate buffered saline (PBS) on high binding microtitre plates (Nunc Maxisorp) overnight at 40 C. The plates were blocked with PBS-BSA 1%, for 30 min at RT with agitation. The test samples were then diluted 1/1000 and incubated at room temperature for 1 hour with agitation. After washing, bound murine 10 or rabbit antibody was detected using Jackson ImmunoLaboratories Inc. peroxidase conjugated affiniPure Goat Anti-Mouse IgG (H+L) (ref: 115-035-003) or AffiniPure Goat Anti-Rabbit IgG (H+L) (ref: 11-035-003) diluted 1:5000 in PBS-tween 0.05%. The detection antibodies were incubated for 30 min. at room temperature with agitation. The color was developed using 4 mg OPD (Sigma) + 5 pl H202 per 10 ml pH 4.5 0.IM citrate 15 buffer for 15 minutes in the dark at room temperature. The reaction was stopped with 50 pl HCI, and the optical density was read at 490 nm relative to 650 nm. The O.D. for a 1/1000 dilution of Post Ill was compared to the O.D. obtained with the same dilution of Pre-immune sera. 20 Results generated with mice and rabbit sera are presented in Figure 5. A good seroconversion against each antigen was observed. Evaluation of sera directed against SBI was impaired due to the Ig binding activity of this protein. Anti-killed whole cells ELISA: 25 Killed whole cells (heat or formaldehyde inactivated) from S. aureus type 5 and 8 or S. epidermidis strain Hay were coated at 20 pg/mI in phosphate buffered saline (PBS) on high binding microtitre plates (Nunc Maxisorp) overnight at 4' C with evaporation. The plates were blocked with PBS-BSA 1% 30 min at room temperature with agitation. Protein 30 A was neutralised by addition of 10pg/ml of Affinity Purified Chickedn anti-ProteinA (ICL ref: CPA-65A-2) diluted In PBS-tween 0.05% followed by incubation for 1 hour at room temperature. The test samples were then diluted two-fold on the microplate in PBS-0.05% from a starting dilution at 1/10 and incubated 1 hour at room temperature with agitation. After washing, bound murine or rabbit antibody was detected using Jackson 35 ImmunoLaboratories Inc. peroxidase-conjugated affiniPure Goat Anti-Mouse IgG (H+L) (ref: 115-035-003) or AffinlPure Goat Anti-Rabbit IgG (H+L) (ref: 11-035-003) diluted 66 WO 2006/032472 PCT/EP2005/010184 1:5000 in PBS-tween 0.05%. This detection antibodies were incubated for 30 min. at room temperature with agitation. The color was developed using 4 mg OPD (Sigma) + 5 p) H202 per 10 ml pH 4.5 0.1M citrate buffer for 15 minutes in the dark, at room temperature. The reaction was stopped with 50 pl HCI, and the optical density was read at 5 490 nm relative to 650 nm. It should be noted that expression levels of proteins in staphylococci will vary depending on culture conditions. Therefore a negative result may reflect the choice of incorrect culture conditions rather than a lack of immunogenicity. 10 The results using mice sera are shown in Table 5 and some of the graphs are shown in figure 6. A weak recognition of S. aureus strain 5 is observed with sera directed against SdrC, FnbpA, Ebh, Sbi and IsaA, Recognition of S. aureus draNP'V 9 tAS08 ON the serum directed against Sbl. Weak recognition of S. epidermidis Hay Is observed with 15 sera directed against AtI amidase, MRP, IsdA, lsaA, Ebh, Aaa and SbI. A selection of results generated using rabbit sera are shown in figure 7 and summarized in Table 6. Very good recognition of the three strains was observed with lsaA and IsdB. A weak recognition of the three stains was observed with HarA although animals only 20 received one injection rather than the three injections used for the other proteins. Table 5 Protein name React on SA5 React on SA8 React on SE Hay lsaA (+) (+) (+) CIfA - +)( Atl amIdase - - ++ SdrG - - Glucosamidase - IsdA - - ++ Alpha toxin - SrdC ++ (+) Ebh + + AaA -_- _++ MRP -_-_++ Sbi ++ ++ +. FnbpA + + (+) 67 WO 2006/032472 PCT/EP2005/010184 Table 6 Protein name React on SA5 React on SA8 React on SE Hay IsaA +++ +++ +++ CKfA + ++ ++ Atl amidase -_++ + lsdB ++ +++ +++ SdrG + + + Glucosamidase HarA (1 inject.) + + + isdA Alpha toxin + SrdC -_-_ Ebh + AaA -_-_ MRP ++ Sbi -_+++_.. FnbpA -_++ ++ 5 Example 8 Efficacy of combinations of staphylococcal proteins in a nasal colonization model. 10 Fifteen groups of three cotton rats were inoculated with combinations of eight staphylococcal antigens and five cotton rats which acted as controls were treated with no antigen. These sixteen groups are as follows: Group 1 - Ati-glucosamine, Ati-amidase, AAA, alpha toxin, SdrC, SdrG, Ebh, Sbi 15 Group 2 - Ati-glucosamine, Atl-amidase, lsdA, isdB, CifA, SdrC, Ebh, FnbpA Group 3 - Atl-glucosamine, Ati-amidase, HarA, IsdA, MRP, lsdB, AAA, alpha toxin Group 4 - Ati-glucosamine, HarA, IsdA, AAA, ClfA, IsaA, Ebh, Sbi Group 5 - HarA, MRP, AAA, alpha toxin, CIfA, SdrC, Ebh, FnbpA Group 6 - lsdA, IsdB, AAA, alpha toxin, CIfA, SdrG, Sbi, FnbpA 20 Group 7 - Ati-aminidase, isdA, MRP, AAA, IsaA, SdrG, Ebh, FnbpA Group 8 - Control Group 9 - Ati-glucosamine, IsdA, MRP, alpha toxin, IsaA, SdrC, Sbi, FnbpA 68 WO 2006/032472 PCT/EP2005/I10184 Group 10 - Ati-glucosamine, MRP, lsdB, AAA, CIfA, IsaA, SdrC, SdrG Group 11- At-amindase, MRP, lsdB, alpha toxin, CIfA, IsaA, Ebh, Sbi Group 12 - Atl-glucosamine, HarA, IsdB, alpha toxin, IsaA, SdrG, Ebh, FnbpA Group 13 - Ati-amidase, HarA, isdB, AAA, IsaA, SdrC, Sbi, FnbpA 5 Group 14 - Ati-glucosamine, Atl-amidase, HarA, MRP, CIfA, SdrG, Sbi, FnbpA Group 15 - Ati-amidase, HarA, IsdA, alpha toxin, CIfA, IsaA, SdfC, SdrG Group 16 - HarA, IsdA, MRP, isdB, SdrC, SdrG, Ebh, Sbi Each mix of antigens contained 3gg of each antigen mixed with an adjuvant made of 10 liposomes containing MPL and QS21. The cotton rats were inoculated three times on days 1, 14 and 28 of the experiment. Two weeks after Inoculation, the efficacy of the immunisations were assessed using a nasal colonisation assay as described in Kokai-Kun et al (2003) Antimicrob.Agents.Chemother. 47; 1589-1597. 15 Classical multiple linear regression analysis was carried out on the data using "Design Expert 6" software. The presence of an antigen was coded as +1 and the absence of an antigen by -1. UsIng the equation of the model it was possible to determine which antigens were the key antigens which produced a large decrease in the number of colonies per nose. 20 Results The results of the nasal colonisation assay are shown in Table 7. The control group had a mean logCFU/nose of 3.51335 and a decrease in nasal colonisation could be see for all 25 the groups of cotton rats inoculated with staphylococcal proteins. Groups 4, 9 and 13 showed the greatest decrease In nasal colonisation with a decrease of over 2 logs in CFU/nose. Groups 12 and 16 also gave good results, showing a decease of about 2 logs in CFU/nose. 30 Table 7 Group Mean observed LogCFU/nose Predicted LogCFU/nose 1 1.77527 2.03560 2 2.90435 2.52684 3 1.96556 2.23033 4 1.27748 1.21872 5 1.67304 1.93128 6 2.79745 2.98193 7 2.21481 2.30705 8 3.51355 3.47317 69 WO 2006/032472 PCT/EP2005/010184 9 1.22480 1.44080 10 2.03085 1.93204 11 2.02522 1.81581 12 1.53402 1.70996 13 1.36063 1.49100 14 2.31201 1.73909 15 2.22979 1.98223 16 1.58109 1.44004 The contribution of specific antigens within the antigen mix was calculated using multiple regression analysis of the nasal colonisation data. The final mdel contains the seven best antigens. Results for these antigens are shown in Table 8. Within the context of the 5 protein mix, the inclusion of HarA gave the greatest decrease in nasal colonisation, followed by IsaA, Sbi, SdrC, autolysin-glucosamine, MRP and Ebh. Table 8 Effects In difference of loqCFU/nose and ratio of CFU/nose for the seven best 10 antigens in the model and correspondinq p-values. antigen prob >F Effect Reduction Cumulative Cumulative estimate ratio effect ratio HarA 0.033 -0.596 3.9 -0.596 3.9 IsaA 0.046 -0.558 3,6 -1.154 14.3 Sbi 0.077 -0.491 3.1 -1.645 44.2 SdrC 0.22 -0.337 2.2 -1.982 96.0 Ati-glucos 0.238 -0.324 2.1 -2.306 202.2 MRP 0.239 -0.323 2.1 -2.629 425.3 Ebh 0.297 -0.286 1.9 -2.914 821.0 15 70

Claims (18)

1. An immunogenic composition comprising at least two different isolated proteins or immunogenic fragments thereof selected from at least two groups of proteins or immunogenic 5 fragments selected from the following groups: Group a) at least one staphylococcal extracellular component binding protein or immunogenic fragment thereof selected from the group consisting of SdrG, laminin receptor, EbhA, EbhB, Elastin binding protein (EbpS), EFB (FIB), SBI, autolysin, ClfA, SdrC, SdrH, 10 Lipase GehD, FnbA, FnbB, Cna, ClfB, FbpA, Npase, IsaA/PisA, SsaA, EPB, SSP-1, SSP-2, HBP, Vitronectin binding protein, coagulase and MAP; Group b) at least one staphylococcal transporter protein or immunogenic fragment thereof selected from the group consisting of Immunodominant ABC transporter, IsdA, IsdB, 15 Mg2+ transporter, SitC and Ni ABC transporter; Group c) at least one staphylococcal toxin or immunogenic fragment thereof selected from the group consisting of alpha toxin (Hla), alpha toxin H35R mutant and RNA Ill activating protein (RAP); 20 wherein alpha toxin (HIa) or alpha toxin H35R mutant is present in the immunogenic composition.

2. The immunogenic composition of claim 1 wherein at least one protein or immunogenic 25 fragment is selected from group a).

3. The immunogenic composition of claim 1 or 2 wherein at least one protein or immunogenic fragment is selected from group b). 30

4. The immunogenic composition of any one of claims 1 - 3 wherein at least one protein or immunogenic fragment is selected from group a), group b) and group c).

5. The immunogenic composition of any one of claims 1 - 4 comprising at least one protein or immunogenic fragment from S. aureus. 35

6. The immunogenic composition of any one of claims 1 - 5 comprising at least one protein or immunogenic fragment from S. epidermidis. 71

7. The immunogenic composition of any one of claims 1 - 6 further comprising a PIA polysaccharide or oligosaccharide. 5

8. The immunogenic composition of any one of claims 1 - 7 further comprising type V and/or type VIII capsular polysaccharide or loigosaccharide from S. aureus.

9. The immunogenic composition of any one of claims 1 - 8 further comprising Type I and/or Type I and/or Type Ill capsular polysaccharide or oligosaccharide from S. epidermidis. 10

10. The immunogenic composition of any one of claims 7 - 9 wherein a staphylococcal capsular polysaccharide is conjugated to a protein carrier.

11. The immunogenic composition of claim 10 wherein the protein carrier is selected from 15 the group consisting of tetanus toxoid, diphtheria toxoid, CRM197, Haemophilus influenzae protein D, pneumolysin and alpha toxoid.

12. The immunogenic composition of any one of claims 1 - 11 wherein an effective immune response is generated against both S.aureus and S. epidermidis. 20

13. A vaccine comprising the immunogenic composition of any one of claims 1 - 12 and a pharmaceutically acceptable excipient.

14. A method of making a vaccine comprising the steps of mixing antigens to make the 25 immunogenic composition of any one of claims 1 - 12 and adding a pharmaceutically acceptable excipient.

15. A method of preventing or treating staphylococcal infection comprising the step of administering the vaccine of claim 13 to a patient in need thereof. 30

16. A use of the immunogenic composition of any one of claims 1 - 12 in the manufacture of a vaccine for treatment or prevention of staphylococcal infection.

17. A method of preparing an immune globulin for use in prevention or treatment of 35 staphylococcal infection comprising the steps of immunising a recipient with the vaccine of claim 13 and isolating immune globulin from the recipient. 72

18. The immunogenic composition of claim 1, substantially as hereinbefore described with reference to any of the examples and/or figures. 73