Reassortment and interspecies transmission of North American H6N2 influenza viruses

被引:56
作者
Webby, RJ
Woolcock, PR
Krauss, SL
Webster, RG
机构
[1] St Jude Childrens Res Hosp, Dept Infect Dis, Div Virol, Memphis, TN 38105 USA
[2] Univ Calif Davis, Calif Anim Hlth & Food Safety Lab Syst, Fresno, CA 93725 USA
[3] Univ Tennessee, Ctr Hlth Sci, Dept Pathol, Memphis, TN 38163 USA
关键词
influenza; H6N2; interspecies transmission; avian influenza;
D O I
10.1006/viro.2001.1341
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
H6N2 influenza viruses were isolated from California chickens in 2000 and 2001. Here we report the characterization of these H6N2 viruses, one of the few descriptions of non-H5, non-H7 subtype influenza viruses in this host. The H6N2 viruses were nonpathogenic in experimentally infected chickens and could be divided into three genotypes, All three genotypes of virus had similar surface glycoproteins and all contained an 18 amino acid deletion in the neuraminidase, a characteristic of other chicken influenza viruses. Differences were apparent, however, in the complement of replicative protein genes between the genotypes. The presence of multiple H6N2 genotypes suggests that independent transmission and/or reassortment events may have taken place between aquatic bird and chicken influenza viruses. (C) 2002 Elsevier Science (USA).
引用
收藏
页码:44 / 53
页数:10
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