Early estimates of seasonal influenza vaccine effectiveness in Europe: results from the I-MOVE multicentre case–control study, 2012/13

M Valenciano; E Kissling; Collective I-MOVE case–control study team

doi:10.2807/ese.18.07.20400-en

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Early estimates of seasonal influenza vaccine effectiveness in Europe: results from the I-MOVE multicentre case–control study, 2012/13

M Valenciano^1,2, E Kissling^1,2, Collective I-MOVE case–control study team³
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Affiliations: ¹ EpiConcept, Paris, France ² These authors contributed equally to the work and share first authorship ³ Members of the team are listed at the end of the article

Correspondence:
M Valenciano
m.valenciano epiconcept.fr
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Citation style for this article: Valenciano M, Kissling E, I-MOVE case–control study team Collective. Early estimates of seasonal influenza vaccine effectiveness in Europe: results from the I-MOVE multicentre case–control study, 2012/13 . Euro Surveill. 2013;18(7):pii=20400. https://doi.org/10.2807/ese.18.07.20400-en Received: 08 Feb 2013

Abstract

We conducted a test-negative case-control study based in five European sentinel surveillance networks. The early 2012/13 adjusted influenza vaccine effectiveness was 78.2% (95% CI: 18.0 to 94.2) against influenza B, 62.1% (95% CI: ?22.9 to 88.3%) against A(H1)pdm09, 41.9 (95% CI: ?67.1 to 79.8) against A(H3N2) and 50.4% (95% CI: ?20.7 to 79.6) against all influenza types in the target groups for vaccination. Efforts to improve influenza vaccines should continue to better protect those at risk of severe illness or complications. .