1Webster R G~ Bean W J, Gorman O T, Chambers T M, Kawaoka Y. Evolution and ecology of influenza A viruses. Microbiological Reviews, 1992, 56(1): 152-179.
2Tong S, Li Y, Rivailler P, Conrardy C, Castillo D A A, Chela L M, Recuenco S, Ellison J A, Davis C T, York I A. A distinct lineage of influenza A virus from bats. Proceedings of the National Academy of Sciences of the USA, 2012, 109(11): 4269-4274.
3Kayali G, Barbour E, Dbaibo G, Tabet C, Saade M, Shaib H A, Debeauchamp J, Webby R J. Evidence of Infection with H4 and H11Avian Influenza Viruses among Lebanese Chicken Growers. PLoS One, 2011, 6(10): e26818.
4Hu Y, Liu X K, Li S Y, Guo X B, Yang Y, Jin M L. Complete genome sequence of a novel H4N1 influenza virus isolated from a pig in central China. Journal of V~rology, 2012, 86(24): 13879-13879.
5Teng Q Y, Ji X W, Li G X, Li X S, Li Z J. Complete genome sequences of a novel reassortant H4N2 avian influenza virus isolated from a live poultry market in Eastern China. Journal of Firology, 2012 86(21): 11952-11952.
6Karasin A I, Brown I H, Carman S, Olsen C W. Isolation and characterization of H4N6 avian influenza viruses from pigs with pneumonia in Canada. Journal of k~rology, 2000, 74(19): 9322-9327.
7Trong W, Manoosak W, Supanat B, Napawan B, Pravina K, Alongkorn A. Genetic characterization of avian influenza subtype H4N6 and H4N9 from live bird market, Thailand. l/irology Journal, 2011, 8: 131.
8Zhang H, Chen Q J, Chen Z. Characterization of an H4N2 avian influenza virus isolated from domestic duck in Dongting Lake wetland in 2009. Virus Genes, 2012, 44(1): 24-31.
9Ninomiya A, Takada A, Okazaki K, Shortridge K F, Kida H. Seroepidemiologieal evidence of avian H4, H5, and H9 influenza A virus transmission to pigs in southeastern China. Veterinary Microbiology, 2002, 88(2): 107-114.
10Hoffmann E, Stech J, Guan Y, Webster R G, Perez D R. Universal primer set for the full-length amplification of all influenza A viruses. Archives of Virology, 2001, 146(12): 2275-2289.
