美国中西部猪群中新重配H3N1型猪流感病毒的分离与基因特征分析
Isolation and genetic characterization of new reassortant H3N1 swine influenza virus from pigs in the midwestern United States.
作者信息
Ma Wenjun, Gramer Marie, Rossow Kurt, Yoon Kyoung-Jin
机构信息
Veterinary Diagnostic Laboratory, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA.
出版信息
J Virol. 2006 May;80(10):5092-6. doi: 10.1128/JVI.80.10.5092-5096.2006.
Abstract
Since the introduction of H3N2 swine influenza viruses (SIVs) into U.S. swine in 1998, H1N2 and H1N1 reassortant viruses have emerged from reassortment between classical H1N1 and H3N2 viruses. In 2004, a new reassortant H3N1 virus (A/Swine/Minnesota/00395/2004) was identified from coughing pigs. Phylogenetic analyses revealed a hemagglutinin segment similar to those of contemporary cluster III H3N2 SIVs and a neuraminidase sequence of contemporary H1N1 origin. The internal genes were of swine, human, and avian influenza virus origin, similar to those of contemporary U.S. cluster III H3N2 SIVs. The recovery of H3N1 is further evidence of reassortment among SIVs and justifies continuous surveillance.
摘要
自1998年H3N2猪流感病毒（SIVs）传入美国猪群以来，H1N2和H1N1重配病毒已从经典H1N1和H3N2病毒之间的重配中出现。2004年，从咳嗽猪中鉴定出一种新的重配H3N1病毒（A/猪/明尼苏达/00395/2004）。系统发育分析显示，其血凝素片段与当代III群H3N2 SIVs的片段相似，神经氨酸酶序列来自当代H1N1。内部基因来源于猪、人和禽流感病毒，与当代美国III群H3N2 SIVs的基因相似。H3N1的出现进一步证明了SIVs之间的重配，并证明持续监测的合理性。
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