High genetic and antigenic similarity between a swine H3N2 influenza A virus and a prior human influenza vaccine virus: A possible immune pressure-driven cross-species transmission
文献类型: 外文期刊
第一作者: Pan, Chungen
作者: Pan, Chungen;Jiang, Shibo;Wang, Guiping;Liao, Ming;Zhang, Gui-Hong
作者机构:
关键词: Influenza;Influenza A virus;H3N2;H1N1;Genetic similarity;Antigen drift;Immune pressure;Cross-species transmission
期刊名称:BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS ( 影响因子:3.575; 五年影响因子:3.381 )
ISSN: 0006-291X
年卷期: 2009 年 385 卷 3 期
页码:
收录情况: SCI
摘要: In late April of 2009, a global outbreak of human influenza was reported. The causative agent is a highly unusual reassortant H1N1 influenza virus carrying genetic segments derived from swine, human and avian influenza viruses. In this study, we compared the HA, NA and other gene segments of a swine H3N2 influenza A virus, A/Swine/Guangdong/z5/2003, which was isolated from pigs in 2003 in Guangdong Province, China, to the predominant human and swine H3N2 viruses. We found that the similarity of gene segments of A/Swine/Guangdong/z5/2003 was closer to Moscow/99-like human H3N2 virus than Europe swine H3N2 viruses during 1999-2002. These results suggest that A/Swine/Guangdong/z5/2003 may be Porcine in origin, possibly being driven by human immune pressure induced by either natural H3N2 virus infection or use of A/Moscow/10/99 (H3N2)-based human influenza vaccine. The results further confirm that swine may play a dual role as a "shelter" for hosting influenza virus from humans or birds and as a "mixing vessel" for generating reassortant influenza viruses. such as the one causing current influenza pandemic. (C) 2009 Elsevier Inc. All rights reserved.
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