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Volume 30, Number 6—June 2024
Dispatch

Evolution and Antigenic Differentiation of Avian Influenza A(H7N9) Virus, China

Yang Liu1, Yuhua Chen1, Zhiyi Yang, Yaozhong Lin, Siyuan Fu, Junhong Chen, Lingyu Xu, Tengfei Liu, Beibei Niu, Qiuhong Huang, Haixia Liu, Chaofeng Zheng, Ming LiaoComments to Author , and Weixin JiaComments to Author 
Author affiliations: South China Agricultural University, Guangzhou, China (Y. Liu, Z. Yang, Y. Lin, S. Fu, J. Chen, L. Xu, T. Liu, B. Niu, Q. Huang, M. Liao, W. Jia); Guangzhou Animal Health Inspection Institute, Guangzhou (Y. Chen); Guangdong Aib Polytechnic College, Guangzhou (H. Liu); Animal Husbandry and Veterinary Station, Urumqi, China (C. Zheng)

Main Article

Figure 1

Phylogenetic analysis of evolution and antigenic differentiation of avian influenza A(H7N9) virus, China. Colors in columns at left show locations, timeframes, hosts, and pathogenicity of virus strains. The maximum-likelihood phylogenetic tree of the hemagglutinin gene depicts viruses corresponding to epidemic waves 1–5. Tree on right shows detail of Group.y.2.3 (red rectangles) and Group.y.2.4.4 (red circles) in comparison with vaccine strains. Scale bar indicates nucleotide substitutions per site. LPAI, low-pathogenicity avian influenza; HPAI, highly pathogenic avian influenza; Other-N, sites in the northern region; Other-S, sites in the southern region.

Figure 1. Phylogenetic analysis of evolution and antigenic differentiation of avian influenza A(H7N9) virus, China. Colors in columns at left show locations, timeframes, hosts, and pathogenicity of virus strains. The maximum-likelihood phylogenetic tree of the hemagglutinin gene depicts viruses corresponding to epidemic waves 1–5. Tree on right shows detail of Group.y.2.3 (red rectangles) and Group.y.2.4.4 (red circles) in comparison with vaccine strains. Scale bar indicates nucleotide substitutions per site. LPAI, low-pathogenicity avian influenza; HPAI, highly pathogenic avian influenza; Other-N, sites in the northern region; Other-S, sites in the southern region.

Main Article

1These first authors contributed equally to this article.

Page created: April 03, 2024
Page updated: May 22, 2024
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