JP2021527073A - ブタサーコウイルスに対するワクチン接種 - Google Patents
ブタサーコウイルスに対するワクチン接種 Download PDFInfo
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- JP2021527073A JP2021527073A JP2020568520A JP2020568520A JP2021527073A JP 2021527073 A JP2021527073 A JP 2021527073A JP 2020568520 A JP2020568520 A JP 2020568520A JP 2020568520 A JP2020568520 A JP 2020568520A JP 2021527073 A JP2021527073 A JP 2021527073A
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Abstract
Description
本明細書で使用される「ワクチン」という用語は、PCVに対して動物(例えば、豚)における免疫応答を引き起こし、刺激し、または増幅するために使用され得る任意の組成物を含む。
本発明は、離乳時の母豚への1回の投与および3〜6週齢の子豚への1回の投与を本質的に含む、豚における改善されたPCVワクチン接種レジメンを提供する。典型的な実施形態では、母豚およびそれらの子豚は、離乳時に本質的に同日に処置される。このようなワクチン接種は、MDAを評価する必要なく子豚を効果的に保護する。このようなワクチン接種レジメンは、次の離乳時まで母豚を効果的に保護する。このようなワクチン接種は、3〜6週齢での単回のワクチン接種による次世代子豚の効果的なワクチン接種を確実にする。
好ましい実施形態では、本発明は、豚にPCV2に対するワクチンを接種するために、またはPCV2感染または疾患を制御するために使用される。したがって、本発明は、PCV2ワクチンを使用する。
研究デザイン
この研究は、PCVD研究に関するEUコンソーシアムの基準(the criteria of the EU consortium on PCVD research)に従って、PCVDの診断が確認されたイタリアの養豚場で実施される。研究は、無作為化、対照化、盲検化されたデザインに従って実施される。
・グループA:離乳時にワクチンを接種する(V1)。
・グループB:出産予定日の5週間前と3週間前にのみワクチンを接種する(V2)。
・グループC:非ワクチン接種/対照(NV)
調査物品
製品:CIRCOVAC(CEVA)
組成/力価:不活化PCV2ワクチン
提示:100mlのPETバイアル
約3週齢の健康な子豚900匹(各グループ100匹)が研究に含まれる。すべての子豚は、若い子豚としてワクチンを接種され、最初の繁殖で追加免疫された母豚からのものである。母豚は、ポイント2で示されたスキームに従って、前回の泌乳期からの離乳時、または出産の5週間前と3週間前にワクチンを接種される(母豚の2つのグループ)。
研究動物(すべてのグループが混合される)は、基準通りに農場に収容される。
研究は盲検化される。ワクチンのバイアルは、ラベルコードによってのみ識別される。
・用量:母豚2ml、子豚0.5ml
・経路:筋肉内注射による
・注射部位:首の左側
○3週齢のグループA
○6週齢のグループB
○非ワクチン接種のグループC
以下のパラメーターは、さまざまなワクチン接種プロトコルの有効性を評価するために使用される。
i.1日の平均体重増加(ADWG)
ii.淘汰された動物を含む死亡率および死因
iii.罹患率(個別の処置/注射)
iv.PCV2に対するPCR陽性動物の割合
v.血液サンプルからのPCV2のウイルス量(Q−PCR)
vi.PRRSVおよびM hyoの血清学的プロファイリング
vii.自然死した動物および人道的に安楽死させた動物の剖検および微生物学的調査
viii.屠殺場における肺病変スコアリング
ワクチン接種および感染に対する血清学的反応は、市販のキット[IDEXX laboratories(PRRSおよびMhyo)およびINGENASA(PCV2)IgM+IgG]を使用して測定される。
細胞性免疫応答は、IFN−γ SCを決定するためにELISpotアッセイによって測定される。
屠殺場では、マデックのグリッデとSPESグリッドに従って肺病変がチェックされる。
Claims (12)
- 豚の群れにおけるPCV感染または疾患を制御するための方法での使用のためのPCVワクチンであって、前記方法が、母豚およびそれらの子豚にPCVに対するワクチンを接種することを含み、(i)母豚は、離乳時にワクチンを接種され、(ii)子豚は、2〜7週齢においてワクチンを接種される、使用のためのPCVワクチン。
- 母豚およびそれらの子豚にPCVに対するワクチンを接種することを含み、(i)母豚は、離乳時にPCVに対するワクチンを接種され、(ii)前記子豚は、3〜6週齢においてPCVに対するワクチンを接種される、請求項1に記載の使用のためのPCVワクチン。
- 豚にPCV感染または疾患に対するワクチンを接種するための使用のためのPCVワクチンであって、母豚およびそれらの子豚にワクチンを接種することを含み、(i)母豚は、離乳時にPCVに対するワクチンを接種され、(ii)前記子豚は、2〜7週齢においてPCVに対するワクチンを接種される、使用のためのPCVワクチン。
- 豚において防御的抗PCV免疫を誘導するための使用のためのPCVワクチンであって、母豚およびそれらの子豚にPCVに対するワクチンを接種することを含み、(i)母豚は、離乳時にPCVに対するワクチンを接種され、(ii)前記子豚は、2〜7週齢においてPCVに対するワクチンを接種される、使用のためのPCVワクチン。
- 3週齢において子豚にワクチンを接種することを含む、請求項1〜4のいずれか1項に記載の使用のためのPCVワクチン。
- 6週齢において子豚にワクチンを接種することを含む、請求項1〜4のいずれか1項に記載の使用のためのPCVワクチン。
- 離乳時に、本質的に同日に母豚およびそれらの子豚にワクチンを接種することを含む、請求項1に記載の使用のためのPCVワクチン。
- 前記PCVがPCV2である、請求項1に記載の使用のためのPCVワクチン。
- 前記母豚および子豚のワクチン接種が不活化PCV2ワクチンで実施される、請求項8に記載の使用のためのPCVワクチン。
- 前記母豚および子豚のワクチン接種がPCV2ワクチンの単回注射を含む、請求項8または9に記載の使用のためのPCVワクチン。
- 前記母豚および子豚のワクチン接種がPCVワクチンの単回の筋肉内注射を含む、請求項1に記載の使用のためのPCVワクチン。
- 前記母豚が、それらの子豚の各離乳時にワクチンを接種される、請求項1に記載の使用のためのPCVワクチン。
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EP3953370A1 (en) | 2019-04-04 | 2022-02-16 | Boehringer Ingelheim Animal Health USA Inc. | Porcine circovirus type 3 (pcv3) vaccines, and production and uses thereof |
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FR2772047B1 (fr) | 1997-12-05 | 2004-04-09 | Ct Nat D Etudes Veterinaires E | Sequence genomique et polypeptides de circovirus associe a la maladie de l'amaigrissement du porcelet (map), applications au diagnostic et a la prevention et/ou au traitement de l'infection |
EP1816200B1 (en) | 1997-12-11 | 2016-03-09 | Merial | Postweaning multisystemic wasting syndrome virus for pigs |
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JP2003502303A (ja) * | 1999-06-10 | 2003-01-21 | メリアル | Pcv−dnaワクチン |
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