Published in:
01-02-2013 | Original Article
Characterization of low-pathogenic H6N6 avian influenza viruses in central China
Authors:
Yanfeng Yao, Huadong Wang, Quanjiao Chen, Hongbo Zhang, Tao Zhang, Jianjun Chen, Bing Xu, Hanzhong Wang, Bing Sun, Ze Chen
Published in:
Archives of Virology
|
Issue 2/2013
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Abstract
Three strains of H6N6 subtype avian influenza virus (AIV) were isolated from live-poultry markets of central China during 2009-2010. A phylogenetic analysis showed that these isolates originated from gene reassortment among different virus lineages of the H6 subtype. In an experimental infection of animals, the selected isolate was non-pathogenic for chickens and low-pathogenic for mice. The wild-type isolate was capable of replication in mouse lung without prior adaptation, and the virulence to mice increased rapidly during adaption in mouse lung. The genomes of viruses of passage 0 (P0), P4, and P8 were sequenced and compared, and virulence-related amino acid substitutions were found in multiple sites during mouse lung passage.