Influenza vaccine effectiveness against A(H3N2) during the delayed 2021/22 epidemic in Canada

Influenza virus circulation virtually ceased in Canada during the COVID-19 pandemic, re-emerging with the relaxation of restrictions in spring 2022. Using a test-negative design, the Canadian Sentinel Practitioner Surveillance Network reports 2021/22 vaccine effectiveness of 36% (95% CI: −38 to 71)...

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Autores principales: Kim, Shinhye, Chuang, Erica SY, Sabaiduc, Suzana, Olsha, Romy, Kaweski, Samantha E, Zelyas, Nathan, Gubbay, Jonathan B, Jassem, Agatha N, Charest, Hugues, De Serres, Gaston, Dickinson, James A, Skowronski, Danuta M
Formato: Online Artículo Texto
Lenguaje:English
Publicado: European Centre for Disease Prevention and Control (ECDC) 2022
Materias:
Rapid Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9511683/
https://www.ncbi.nlm.nih.gov/pubmed/36148674
http://dx.doi.org/10.2807/1560-7917.ES.2022.27.38.2200720
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author Kim, Shinhye
Chuang, Erica SY
Sabaiduc, Suzana
Olsha, Romy
Kaweski, Samantha E
Zelyas, Nathan
Gubbay, Jonathan B
Jassem, Agatha N
Charest, Hugues
De Serres, Gaston
Dickinson, James A
Skowronski, Danuta M
author_facet Kim, Shinhye
Chuang, Erica SY
Sabaiduc, Suzana
Olsha, Romy
Kaweski, Samantha E
Zelyas, Nathan
Gubbay, Jonathan B
Jassem, Agatha N
Charest, Hugues
De Serres, Gaston
Dickinson, James A
Skowronski, Danuta M
author_sort Kim, Shinhye
collection PubMed
description Influenza virus circulation virtually ceased in Canada during the COVID-19 pandemic, re-emerging with the relaxation of restrictions in spring 2022. Using a test-negative design, the Canadian Sentinel Practitioner Surveillance Network reports 2021/22 vaccine effectiveness of 36% (95% CI: −38 to 71) against late-season illness due to influenza A(H3N2) clade 3C.2a1b.2a.2 viruses, considered antigenically distinct from the 3C.2a1b.2a.1 vaccine strain. Findings reinforce the World Health Organization’s decision to update the 2022/23 northern hemisphere vaccine to a more representative A(H3N2) clade 3C.2a1b.2a.2 strain.
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spelling pubmed-95116832022-10-21 Influenza vaccine effectiveness against A(H3N2) during the delayed 2021/22 epidemic in Canada Kim, Shinhye Chuang, Erica SY Sabaiduc, Suzana Olsha, Romy Kaweski, Samantha E Zelyas, Nathan Gubbay, Jonathan B Jassem, Agatha N Charest, Hugues De Serres, Gaston Dickinson, James A Skowronski, Danuta M Euro Surveill Rapid Communication Influenza virus circulation virtually ceased in Canada during the COVID-19 pandemic, re-emerging with the relaxation of restrictions in spring 2022. Using a test-negative design, the Canadian Sentinel Practitioner Surveillance Network reports 2021/22 vaccine effectiveness of 36% (95% CI: −38 to 71) against late-season illness due to influenza A(H3N2) clade 3C.2a1b.2a.2 viruses, considered antigenically distinct from the 3C.2a1b.2a.1 vaccine strain. Findings reinforce the World Health Organization’s decision to update the 2022/23 northern hemisphere vaccine to a more representative A(H3N2) clade 3C.2a1b.2a.2 strain. European Centre for Disease Prevention and Control (ECDC) 2022-09-22 /pmc/articles/PMC9511683/ /pubmed/36148674 http://dx.doi.org/10.2807/1560-7917.ES.2022.27.38.2200720 Text en This article is copyright of the authors or their affiliated institutions, 2022. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC BY 4.0) Licence. You may share and adapt the material, but must give appropriate credit to the source, provide a link to the licence, and indicate if changes were made.
spellingShingle Rapid Communication
Kim, Shinhye
Chuang, Erica SY
Sabaiduc, Suzana
Olsha, Romy
Kaweski, Samantha E
Zelyas, Nathan
Gubbay, Jonathan B
Jassem, Agatha N
Charest, Hugues
De Serres, Gaston
Dickinson, James A
Skowronski, Danuta M
Influenza vaccine effectiveness against A(H3N2) during the delayed 2021/22 epidemic in Canada
title Influenza vaccine effectiveness against A(H3N2) during the delayed 2021/22 epidemic in Canada
title_full Influenza vaccine effectiveness against A(H3N2) during the delayed 2021/22 epidemic in Canada
title_fullStr Influenza vaccine effectiveness against A(H3N2) during the delayed 2021/22 epidemic in Canada
title_full_unstemmed Influenza vaccine effectiveness against A(H3N2) during the delayed 2021/22 epidemic in Canada
title_short Influenza vaccine effectiveness against A(H3N2) during the delayed 2021/22 epidemic in Canada
title_sort influenza vaccine effectiveness against a(h3n2) during the delayed 2021/22 epidemic in canada
topic Rapid Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9511683/
https://www.ncbi.nlm.nih.gov/pubmed/36148674
http://dx.doi.org/10.2807/1560-7917.ES.2022.27.38.2200720
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