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. 2022 May;28(5):1039-1042.
doi: 10.3201/eid2805.211580.

Highly Pathogenic Avian Influenza A(H5N8) Clade 2.3.4.4b Viruses in Satellite-Tracked Wild Ducks, Ningxia, China, 2020

Xinru Lv, Xiang Li, Heting Sun, Yi Li, Peng Peng, Siyuan Qin, Weidong Wang, Yuecheng Li, Qing An, Tian Fu, Fengyi Qu, Qiuzi Xu, Rongxiu Qin, Zhenliang Zhao, Meixi Wang, Yulong Wang, Yajun Wang, Xiangwei Zeng, Zhijun Hou, Chengliang Lei, Dong Chu, Yanbing Li, Hongliang Chai

Highly Pathogenic Avian Influenza A(H5N8) Clade 2.3.4.4b Viruses in Satellite-Tracked Wild Ducks, Ningxia, China, 2020

Xinru Lv et al. Emerg Infect Dis. 2022 May.

Abstract

During October 2020, we identified 13 highly pathogenic avian influenza A(H5N8) clade 2.3.4.4b viruses from wild ducks in Ningxia, China. These viruses were genetically related to H5N8 viruses circulating mainly in poultry in Europe during early 2020. We also determined movements of H5N8 virus‒infected wild ducks and evidence for spreading of viruses.

Keywords: China; H5N8; Ningxia; birds; clade 2.3.4.4b; epidemic; highly pathogenic avian influenza A(H5N8) viruses; influenza; influenza virus; phylogeny; public health; respiratory infections; satellite tracked; subtype; viruses; wild ducks; zoonoses.

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Figures

Figure
Figure
Migratory routes of 6 of 9 successfully satellite-tracked mallards infected with highly pathogenic avian influenza A(H5N8) clade 2.3.4.4b viruses, Ningxia, China, 2020. Mallards are indicated by different colors. The sampling site (Changshantou Reservoir) is indicated. Solid and dashed lines indicate spring migration in 2021 and autumn migration in 2020, respectively. Because the other 3 successfully satellite-tracked mallards (birds NX-169, NX-174, and NX-176) had been moving around the sampling point, their movements are not shown.
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