title: Emergence of novel reassortant H3N2 influenza viruses among ducks in China.
abstract: During 2006-2009 influenza virus surveillance, three H3N2 viruses were isolated from ducks in Central China. Sequence and phylogenetic analyses revealed that most segments of these three isolates had high identity with H3N2 swine isolates in South China. However, for M, the three viruses, along with H1N1 swine isolates of North America, formed a cluster; for PB2, two of these isolates fell into the cluster of the H5N1 duck isolates, indicating a reassortment among H3N2, H1N1 swine viruses and H5N1 avian virus. The emergence of H3N2 virus with incorporation of an H5N1 virus gene raises new concerns about the generation of novel viruses that could affect humans.
authors.affiliation: State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Shizishan Street, Hongshan district, Wuhan 430070, P.R. China.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Zhou
authors.forename: Anding
authors.initials: A
authors.lastname: Zhang
authors.forename: Huanchun
authors.initials: H
authors.lastname: Chen
authors.forename: Meilin
authors.initials: M
authors.lastname: Jin
mesh_terms: D000818:Animals; D002681:China; D004372:Ducks / Q000821:virology*; D053118:Influenza A Virus, H1N1 Subtype / Q000235:genetics; D053122:Influenza A Virus, H3N2 Subtype / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification; D053124:Influenza A Virus, H5N1 Subtype / Q000235:genetics; D005585:Influenza in Birds / Q000821:virology*; D010802:Phylogeny; D012367:RNA, Viral / Q000235:genetics; D016865:Reassortant Viruses / Q000235:genetics* / Q000302:isolation & purification; D011995:Recombination, Genetic; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012689:Sequence Homology, Nucleic Acid
chemical_list: D012367:RNA, Viral