H9N2 avian influenza virus-derived natural reassortant H5N2 virus in swan containing the hemagglutinin segment from Eurasian H5 avian influenza virus with an in-frame deletion of four basic residues in the polybasic hemagglutinin cleavage site

Wang, Youling; Yuan, Xiaoyuan; Qi, Lihong; Zhang, Yuxia; Xu, Huaiying; Yang, Jinxing; Ai, Wu; Song, Minxun; Li, Feng; Qi, Wenbao; Liao, Ming; Wang, Dan; Li, Feng; Li, Feng; SCI

机构： Shandong Acad Agr Sci, Inst Poultry Sci, Jinan, Peoples R China; South China Agr Univ, Coll Vet Med, Guangzhou, Guangdong, Peoples R China; S Dakota State Univ, Dept Biol & Microbiol, Box 2140D, Brookings, SD 57007 USA; S Dakota State Univ, Dept Vet & Biomed Sci, Brookings, SD 57007 USA;

关键词： Avian influenza virus Swan H5N2 subtype H9N2 subtype Hemagglutinin gene Polybasic hemagglutinin cleavage site