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季节性三价灭活流感疫苗不能预防雪貂体内新型甲型流感(H3N2v)病毒。

Seasonal trivalent inactivated influenza vaccine does not protect against newly emerging variants of influenza A (H3N2v) virus in ferrets.

机构信息

Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.

出版信息

J Virol. 2013 Jan;87(2):1261-3. doi: 10.1128/JVI.02625-12. Epub 2012 Oct 31.

Abstract

The recent increase in human cases of influenza A H3N2 variant virus [A(H3N2)v] highlights the need to assess whether seasonal influenza vaccination provides cross-protection against A(H3N2)v virus. Our data demonstrate that the 2011-2012 trivalent inactivated influenza vaccine (TIV) protected ferrets against homologous H3N2 virus challenge but provided minimal to no protection against A(H3N2)v virus. The complete absence of specific hemagglutination inhibition antibody response to A(H3N2)v is consistent with the poor cross-protection observed among TIV-immune animals.

摘要

最近,人类感染甲型 H3N2 流感变异病毒(A(H3N2)v)的病例有所增加,这凸显了评估季节性流感疫苗是否对 A(H3N2)v 病毒提供交叉保护的必要性。我们的数据表明,2011-2012 年三价灭活流感疫苗(TIV)能保护雪貂免受同源 H3N2 病毒的攻击,但对 A(H3N2)v 病毒的保护作用极小或没有。针对 A(H3N2)v 的特异性血凝抑制抗体反应完全缺失,与 TIV 免疫动物中观察到的交叉保护作用不佳相一致。

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