Co-circulation and persistence of multiple A/H3N2 influenza variants in China

The spread of influenza A/H3N2 variants possessing the hemagglutinin 121 K mutation and the unexpectedly high incidence of influenza in the 2017–2018 northern hemisphere influenza season have raised serious concerns about the next pandemic. We summarized the national surveillance data of seasonal in...

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Main Authors: Weifeng Shi, Changwen Ke, Shisong Fang, Juan Li, Hao Song, Xiyan Li, Tao Hu, Jie Wu, Tao Chen, Lina Yi, Yingchao Song, Xin Wang, Weijia Xing, Weijuan Huang, Hong Xiao, Lijun Liang, Bo Peng, Weihua Wu, Hui Liu, William J. Liu, Edward C. Holmes, George F. Gao, Dayan Wang
Format: Article
Language:English
Published: Taylor & Francis Group 2019-01-01
Series:Emerging Microbes and Infections
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Online Access:https://www.tandfonline.com/doi/10.1080/22221751.2019.1648183
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author Weifeng Shi
Changwen Ke
Shisong Fang
Juan Li
Hao Song
Xiyan Li
Tao Hu
Jie Wu
Tao Chen
Lina Yi
Yingchao Song
Xin Wang
Weijia Xing
Weijuan Huang
Hong Xiao
Lijun Liang
Bo Peng
Weihua Wu
Hui Liu
William J. Liu
Edward C. Holmes
George F. Gao
Dayan Wang
author_facet Weifeng Shi
Changwen Ke
Shisong Fang
Juan Li
Hao Song
Xiyan Li
Tao Hu
Jie Wu
Tao Chen
Lina Yi
Yingchao Song
Xin Wang
Weijia Xing
Weijuan Huang
Hong Xiao
Lijun Liang
Bo Peng
Weihua Wu
Hui Liu
William J. Liu
Edward C. Holmes
George F. Gao
Dayan Wang
author_sort Weifeng Shi
collection DOAJ
description The spread of influenza A/H3N2 variants possessing the hemagglutinin 121 K mutation and the unexpectedly high incidence of influenza in the 2017–2018 northern hemisphere influenza season have raised serious concerns about the next pandemic. We summarized the national surveillance data of seasonal influenza in China and identified marked differences in influenza epidemics between northern and southern China, particularly the predominating subtype and the presence of an additional summer peak in southern China. Notably, a minor spring peak of influenza caused by a different virus subtype was also observed. We also revealed that the 3C.2a lineage was dominant from the summer of 2015 to the end of the 2015–2016 peak season in China, after which the 3C.2a2 lineage predominated despite the importation and co-circulation of the 121 K variants of 3C.2a1 and 3C.2a3 lineages at the global level. Finally, an analysis based on genetic distances revealed a delay in A/H3N2 vaccine strain update. Overall, our results highlight the complicated circulation pattern of seasonal influenza in China and the necessity for a timely vaccine strain update worldwide.
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spelling doaj-art-4041d72581074b4bbf728a951e0bbf842025-08-20T01:54:18ZengTaylor & Francis GroupEmerging Microbes and Infections2222-17512019-01-01811157116710.1080/22221751.2019.1648183Co-circulation and persistence of multiple A/H3N2 influenza variants in ChinaWeifeng Shi0Changwen Ke1Shisong Fang2Juan Li3Hao Song4Xiyan Li5Tao Hu6Jie Wu7Tao Chen8Lina Yi9Yingchao Song10Xin Wang11Weijia Xing12Weijuan Huang13Hong Xiao14Lijun Liang15Bo Peng16Weihua Wu17Hui Liu18William J. Liu19Edward C. Holmes20George F. Gao21Dayan Wang22Key Laboratory of Etiology and Epidemiology of Emerging Infectious Diseases in Universities of Shandong, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, People’s Republic of ChinaGuangdong Provincial Center for Disease Control and Prevention, Guangzhou, People’s Republic of ChinaDivision of Microbiology Test, Shenzhen Centre for Disease Control and Prevention, Shenzhen, People’s Republic of ChinaKey Laboratory of Etiology and Epidemiology of Emerging Infectious Diseases in Universities of Shandong, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, People’s Republic of ChinaChinese Academy of Sciences, Research Network of Immunity and Health (RNIH), Beijing Institutes of Life Science, Beijing, People’s Republic of ChinaChinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of ChinaKey Laboratory of Etiology and Epidemiology of Emerging Infectious Diseases in Universities of Shandong, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, People’s Republic of ChinaGuangdong Provincial Center for Disease Control and Prevention, Guangzhou, People’s Republic of ChinaChinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of ChinaGuangdong Provincial Center for Disease Control and Prevention, Guangzhou, People’s Republic of ChinaGuangdong Provincial Center for Disease Control and Prevention, Guangzhou, People’s Republic of ChinaDivision of Microbiology Test, Shenzhen Centre for Disease Control and Prevention, Shenzhen, People’s Republic of ChinaKey Laboratory of Etiology and Epidemiology of Emerging Infectious Diseases in Universities of Shandong, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, People’s Republic of ChinaChinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of ChinaGuangdong Provincial Center for Disease Control and Prevention, Guangzhou, People’s Republic of ChinaGuangdong Provincial Center for Disease Control and Prevention, Guangzhou, People’s Republic of ChinaDivision of Microbiology Test, Shenzhen Centre for Disease Control and Prevention, Shenzhen, People’s Republic of ChinaDivision of Microbiology Test, Shenzhen Centre for Disease Control and Prevention, Shenzhen, People’s Republic of ChinaDivision of Microbiology Test, Shenzhen Centre for Disease Control and Prevention, Shenzhen, People’s Republic of ChinaChinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of ChinaMarie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, School of Life and Environmental Sciences and Sydney Medical School, The University of Sydney, Sydney, AustraliaKey Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People’s Republic of ChinaChinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of ChinaThe spread of influenza A/H3N2 variants possessing the hemagglutinin 121 K mutation and the unexpectedly high incidence of influenza in the 2017–2018 northern hemisphere influenza season have raised serious concerns about the next pandemic. We summarized the national surveillance data of seasonal influenza in China and identified marked differences in influenza epidemics between northern and southern China, particularly the predominating subtype and the presence of an additional summer peak in southern China. Notably, a minor spring peak of influenza caused by a different virus subtype was also observed. We also revealed that the 3C.2a lineage was dominant from the summer of 2015 to the end of the 2015–2016 peak season in China, after which the 3C.2a2 lineage predominated despite the importation and co-circulation of the 121 K variants of 3C.2a1 and 3C.2a3 lineages at the global level. Finally, an analysis based on genetic distances revealed a delay in A/H3N2 vaccine strain update. Overall, our results highlight the complicated circulation pattern of seasonal influenza in China and the necessity for a timely vaccine strain update worldwide.https://www.tandfonline.com/doi/10.1080/22221751.2019.1648183Influenza virusA/H3N2vaccinemutation
spellingShingle Weifeng Shi
Changwen Ke
Shisong Fang
Juan Li
Hao Song
Xiyan Li
Tao Hu
Jie Wu
Tao Chen
Lina Yi
Yingchao Song
Xin Wang
Weijia Xing
Weijuan Huang
Hong Xiao
Lijun Liang
Bo Peng
Weihua Wu
Hui Liu
William J. Liu
Edward C. Holmes
George F. Gao
Dayan Wang
Co-circulation and persistence of multiple A/H3N2 influenza variants in China
Emerging Microbes and Infections
Influenza virus
A/H3N2
vaccine
mutation
title Co-circulation and persistence of multiple A/H3N2 influenza variants in China
title_full Co-circulation and persistence of multiple A/H3N2 influenza variants in China
title_fullStr Co-circulation and persistence of multiple A/H3N2 influenza variants in China
title_full_unstemmed Co-circulation and persistence of multiple A/H3N2 influenza variants in China
title_short Co-circulation and persistence of multiple A/H3N2 influenza variants in China
title_sort co circulation and persistence of multiple a h3n2 influenza variants in china
topic Influenza virus
A/H3N2
vaccine
mutation
url https://www.tandfonline.com/doi/10.1080/22221751.2019.1648183
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