title: Novel reassortant H5N5 viruses bind to a human-type receptor as a factor in pandemic risk.
abstract: Highly pathogenic avian influenza A(HPAI) H5N1 viruses pose a serious pandemic threat due to their virulence and high mortality in humans, and their increasingly expanding host range and significant ongoing evolution could enhance their human-to-human transmissibility. Recently, various reassortant viruses were detected in different domestic poultry, with the HA gene derived from the A/goose/Guangdong/1/96-like (Gs/GD-like) lineage and the NA gene from influenza viruses of other subtypes. It is reported that some natural reassortant H5N5 highly pathogenic avian influenza viruses were isolated from poultry in China. And their HA genes were belonged to a new clade 2.3.4.4. We evaluated the receptor binding property and transmissibility in guinea pigs of these reassortant H5N5 HPAIVs. The results showed that these viruses bound to both avian-type (α-2,3) and human-type (α-2,6) receptors. In addition, we found that one of these viruses, 031, not only replicated but also transmitted efficiently in guinea pigs. Therefore, such reassortant influenza viruses may pose a pandemic threat.
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China.
authors.forename: Qunhui
authors.initials: Q
authors.lastname: Li
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China.
authors.forename: Xuan
authors.initials: X
authors.lastname: Wang
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Gao
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China.
authors.forename: Zhongtao
authors.initials: Z
authors.lastname: Sun
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China.
authors.forename: Zhu
authors.initials: Z
authors.lastname: Cui
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Duan
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Li
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China.
authors.forename: Min
authors.initials: M
authors.lastname: Gu
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China.
authors.forename: Xiaoquan
authors.initials: X
authors.lastname: Wang
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Hu
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China.
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Liu
authors.affiliation: Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China. Electronic address: xfliu@yzu.edu.cn.
authors.forename: Xiufan
authors.initials: X
authors.lastname: Liu
mesh_terms: D000818:Animals; D002681:China / Q000453:epidemiology; D006168:Guinea Pigs; D053124:Influenza A Virus, H5N1 Subtype / Q000235:genetics / Q000502:physiology*; D005585:Influenza in Birds / Q000453:epidemiology / Q000821:virology*; D011200:Poultry; D011201:Poultry Diseases / Q000821:virology; D016865:Reassortant Viruses / Q000235:genetics / Q000502:physiology*; D011956:Receptors, Cell Surface / Q000502:physiology*
chemical_list: D011956:Receptors, Cell Surface
keywords: Avian influenza virus; H5N5; Reassortant; Receptor binding; Transmissibility