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. 2021;27(11):2940-2943.
doi: 10.3201/eid2711.204893.

Genetically Divergent Highly Pathogenic Avian Influenza A(H5N8) Viruses in Wild Birds, Eastern China

Guimei He, Le Ming, Xiang Li, Yuhe Song, Ling Tang, Min Ma, Jie Cui, Tianhou Wang

Genetically Divergent Highly Pathogenic Avian Influenza A(H5N8) Viruses in Wild Birds, Eastern China

Guimei He et al. Emerg Infect Dis. 2021.

Abstract

In late 2020, we detected 32 highly pathogenic avian influenza A(H5N8) viruses in migratory ducks in Shanghai, China. Phylogenetic analysis of 5 representative isolates identified 2 sublineages of clade 2.3.4.4b. Each sublineage formed separate clusters with isolates from East Asia and Europe.

Keywords: China; H5N8; avian influenza virus; highly pathogenic avian influenza; influenza; respiratory infections; viruses; wild birds.

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Figures

Figure
Figure
Phylogenetic tree of highly pathogenic avian influenza A(H5N8) viruses isolated in Shanghai, China during 2020 (red text) and reference sequences from GISAID (https://www.gisaid.org). Tree was based on hemagglutinin gene segment; it was constructed using IQ-TREE (13) with 1,000 bootstrap replicates. Yellow shading indicates subclade 2.3.4.4b strains. Pink and blue shading indicate 2 sublineages of subclade 2.3.4.4b. Numbers to the left of node indicate bootstrap values. Scale bars indicate average number of nucleotide substitutions per site.
See this image and copyright information in PMC

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