Outbreaks of Highly Pathogenic Avian Influenza (H5N6) Virus Subclade 2.3.4.4h in Swans, Xinjiang, Western China, 2020
Yanbing Li, Minghui Li, Yulei Li, Jingman Tian, Xiaoli Bai, Cen Yang, Jianzhong Shi, Ridengcaicike Ai, Weidong Chen, Wentao Zhang, Jie Li, Yufei Kong, Yuntao Guan, and Hualan Chen
Author affiliations: State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Heilongjiang, China (Y. Li, M. Li, Y. Li, J. Tian, X. Bai, J. Shi, C. Yang, Y. Kong, Y. Guan, H. Chen); Preventive and Control Center for Animal Disease of Xinjiang Uyghur Autonomous Region, Urumqi, Xinjiang Wei Autonomous Region, China (R. Ai, J. Li); Preventive and Control Center for Animal Disease of Xinjiang Crops, Urumqi (W. Zhang, J. Li)
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Table 2
Virulence related molecular markers detected in the WS/XJ/1/2020 (H5N6) virus detected among migratory whooper swans (Cygnus cygnus) and mute swans (C. olor), Xinjiang Province, China, January 2020
Protein |
Amino acid/motif |
Phenotypic consequences |
Hemagglutinin
|
Cleavage site motif: -RRKR¯G-
|
Polybasic cleavage motif sequence required for high pathogenicity of avian influenza viruses in chickens
|
Neuraminidase
|
Stalk deletion 58–68
|
Increased virulence in mice
|
Polymerase acidic protein
|
515T
|
Increased polymerase activity in mammalian cells
|
Matrix protein 1
|
30D |
Increased virulence in mice |
215A
|
Increased virulence in mice
|
Nonstructural protein 1 |
80–84 deletion |
Increased virulence in mice |
42S |
Increased virulence in mice |
98F |
Increased virulence in mice |
101M |
Increased virulence in mice |
222–225 ESEV (PDZ domain) |
Increased virulence in mice |
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Page created: September 02, 2020
Page updated: November 19, 2020
Page reviewed: November 19, 2020
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