2026-06-14T03:31:44Zhttps://repisalud.isciii.es/rest/oai/requestoai:repisalud.isciii.es:20.500.12105/93062025-05-07T09:12:29Zcom_20.500.12105_2052com_20.500.12105_2051com_20.500.12105_15322col_20.500.12105_19608col_20.500.12105_19609col_20.500.12105_16968col_20.500.12105_16973
Repisalud
author
Rose, Angela Mc
author
Kissling, Esther
author
Emborg, Hanne-Dorthe
author
Larrauri, Amparo
author
McMenamin, Jim
author
Pozo Sanchez, Francisco
author
Trebbien, Ramona
author
Mazagatos, Clara
author
Whitaker, Heather
author
Valenciano, Marta
author
European IVE Group
author
Casas Flecha, Inmaculada
2020-03-23T13:53:25Z
2020-03-23T13:53:25Z
2020-03
Euro Surveill. 2020 Mar;25(10):2000153.
10.2807/1560-7917.ES.2020.25.10.2000153
1560-7917
1560-7917
Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin
32183932
http://hdl.handle.net/20.500.12105/9306
Background: Influenza A(H1N1)pdm09, A(H3N2) and B viruses were co-circulating in Europe between September 2019 and January 2020. Aim: To provide interim 2019/20 influenza vaccine effectiveness (VE) estimates from six European studies, covering 10 countries and both primary care and hospital settings. Methods: All studies used the test-negative design, although there were some differences in other study characteristics, e.g. patient selection, data sources, case definitions and included age groups. Overall and influenza (sub)type-specific VE was estimated for each study using logistic regression adjusted for potential confounders. Results: There were 31,537 patients recruited across the six studies, of which 5,300 (17%) were cases with 5,310 infections. Most of these (4,466; 84%) were influenza A. The VE point estimates for all ages were 29% to 61% against any influenza in the primary care setting and 35% to 60% in hospitalised older adults (aged 65 years and over). The VE point estimates against A(H1N1)pdm09 (all ages, both settings) was 48% to 75%, and against A(H3N2) ranged from -58% to 57% (primary care) and -16% to 60% (hospital). Against influenza B, VE for all ages was 62% to 83% (primary care only). Conclusions: Influenza vaccination is of continued benefit during the ongoing 2019/20 influenza season. Robust end-of-season VE estimates and genetic virus characterisation results may help understand the variability in influenza (sub)type-specific results across studies.
eng
Europe
Influenza
Multicentre study
Test-negative design
Vaccine effectiveness
Interim 2019/20 influenza vaccine effectiveness: six European studies, September 2019 to January 2020
research article
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Interim2019-20InfluenzaVaccine_2020.pdf.txt