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Volume 28, Number 7—July 2022
Research Letter

Natural Reassortment of Eurasian Avian-Like Swine H1N1 and Avian H9N2 Influenza Viruses in Pigs, China

Wanying Sun1, Samuel S.M. Cheng1, Kristy N.T. Lam, Tsz C. Kwan, Ricky W.K. Wong, Leo H.K. Lau, Gigi Y.Z. Liu, Leo L.H. Luk, John K.C. Li, Haogao Gu, Malik PeirisComments to Author , and Leo L.M. Poon
Author affiliations: School of Public Health, The University of Hong Kong, Hong Kong, China (W. Sun, S.S.M. Cheng, K.N.T. Lam, T.C. Kwan, R.W.K. Wong, L.H.K. Lau. G.Y.Z. Liu, L.L.H. Luk, J.K.C. Li, H. Gu, M. Peiris, L.L.M. Poon); Centre for Immunology and Infection, Hong Kong (M. Peiris, L.L.M. Poon); HKU-Pasteur Research Pole, The University of Hong Kong, Hong Kong (M. Peiris, L.L.M. Poon)

Main Article

Table

Swine influenza viruses detected in imported pigs, China, April 2021–February 2022

Year and month No. nasal swabs No. virus isolates Isolation rate, %
2021
Apr 60 0 0
May 75 0 0
Jun 75 0 0
Jul 75 0 0
Aug 75 7* 9.3
Sep 75 1† 1.3
Oct 79 0 0
Nov 85 0 0
Dec
 80
 0
 0
2022
Jan 75 0 0
Feb
 75
 0
 0
Total 829 8 0.97

*All H3N2; pigs were imported from 2 provinces in southern China. †H1N1, pig was from imported from a province in southern China.

Main Article

1These authors contributed equally to this article.

Page created: June 10, 2022
Page updated: June 18, 2022
Page reviewed: June 18, 2022
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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