Influenza returns with a season dominated by clade 3C.2a1b.2a.2 A(H3N2) viruses, WHO European Region, 2021/22-Reference-Cited by-同舟云学术

Influenza returns with a season dominated by clade 3C.2a1b.2a.2 A(H3N2) viruses, WHO European Region, 2021/22

Published:2022-04-14 Issue:15 Volume:27 Page:
ISSN:1560-7917
Container-title:Eurosurveillance
language:en
Short-container-title:

Author:

Melidou Angeliki¹^ORCID,Ködmön Csaba¹^ORCID,Nahapetyan Karen²,Kraus Annette¹^ORCID,Alm Erik¹,Adlhoch Cornelia¹^ORCID,Mooks Piers²,Dave Nishi¹,Carvalho Carlos¹,Meslé Margaux MI²,Daniels Rodney³,Pebody Richard²^ORCID,

Affiliation:

1. European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden

2. World Health Organization (WHO) Regional Office for Europe, Copenhagen, Denmark

3. WHO Collaborating Centre, Francis Crick Institute, London, United Kingdom

Abstract

In the WHO European Region, COVID-19 non-pharmaceutical interventions continued slowing influenza circulation in the 2021/22 season, with reduced characterisation data. A(H3) predominated and, in some countries, co-circulated with A(H1)pdm09 and B/Victoria viruses. No B/Yamagata virus detections were confirmed. Substantial proportions of characterised circulating virus subtypes or lineages differed antigenically from their respective northern hemisphere vaccine components. Appropriate levels of influenza virus characterisations should be maintained until the season end and in future seasons, when surveillance is adapted to integrate SARS-CoV-2.

Publisher

European Centre for Disease Control and Prevention (ECDC)

Subject

Virology,Public Health, Environmental and Occupational Health,Epidemiology

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