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Volume 28, Number 10—October 2022

Novel Zoonotic Avian Influenza A(H3N8) Virus in Chicken, Hong Kong, China

Thomas H.C. Sit, Wanying Sun, Anne C.N. Tse, Christopher J. Brackman, Samuel M.S. Cheng, Amy W. Yan Tang, Jonathan T.L Cheung, Malik Peiris1Comments to Author , and Leo L.M. Poon1
Author affiliations: Government of the Hong Kong Special Administrative Region, Hong Kong, China (T.H.C. Sit, A.C.N. Tse, C.J. Brackman); The University of Hong Kong, Hong Kong (W. Sun, S.M.S. Cheng, A.W. Yan Tang, J.T.L. Cheung, M. Peiris, L.L.M. Poon)

Main Article

Table 2

Retrospective seroprevalence of antibodies to A/chicken/Hong Kong/22-10782/2022 influenza A(H3N8) virus in chicken serum samples collected from affected farms, Hong Kong, China*

Farm Date samples collected No. H3N8 HI titer >1:16, no. (%) H3N8 GMT (95% CI)
A 2022 Feb 16 30 26 (86.7) 28.51 (20.01–40.61)
B 2022 Feb 9 30 2 (6.7) 1.35 (0.96–1.91)
C 2022 Feb 16 30 29 (96.7) 46.31 (31.97–67.09)
D 2022 Feb 24 30 26 (86.7) 16 (10.25–24.99)

*Serologic study was conducted on 28 farms in January‒February 2022. Only data for 4 farms positive for H3N8 virus are shown. GMT, geometric mean titer; HI, hemagglutination inhibition.

Main Article

1These authors contributed equally to this article.

Page created: August 11, 2022
Page updated: September 20, 2022
Page reviewed: September 20, 2022
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