title: Isolation and Phylogenetic Analysis of H1N1 Swine Influenza Virus from Sick Pigs in Southern China.
abstract: Two swine influenza (SI) H1N1 virus was isolated from a pig during a severe outbreak of respiratory disease in south China. The two H1N1 influenza viruses were classical SI virus. A/swine/Guangdong/L6/09 is classical SI virus of recent years, which is of the main SI virus in China. Howere, A/swine/Guangdong/L3/09 was closet to A/swine/Iowa/1931, which was the first isolated SI virus and had demonstrated significant pathogenicity in animal models. The results of phylogenetic analysis of A/swine/Guangdong/L3/09 showed a close relationship with the 1918 pandemic virus. The results suggested that the previous SI virus appeared again. Whether, it brought a new pandemic to pigs deserves more attention.
authors: College of Veterinary Medicine, South China Agricultural University, 483 Wushan Road, Guangzhou, 510642 China.
authors: Wei-Li
authors: WL
authors: Kong
authors: Yu-Mao
authors: YM
authors: Huang
authors: Nan
authors: N
authors: Cao
authors: Hai-Tao
authors: HT
authors: Qi
authors: Liang-Zong
authors: LZ
authors: Huang
authors: Meng-Meng
authors: MM
authors: Zhao
authors: Shang-Song
authors: SS
authors: Guan
authors: Wen-Hua
authors: WH
authors: Wang
authors: Fu-Rong
authors: FR
authors: Zhao
authors: Wen-Bao
authors: WB
authors: Qi
authors: Pei-Rong
authors: PR
authors: Jiao
authors: Gui-Hong
authors: GH
authors: Zhang
keywords: Phylogenetic analysis; Swine influenza virus H1N1
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