Early estimates of seasonal influenza vaccine effectiveness in Europe, 2010/11: I-MOVE, a multicentre case–control study

I-MOVE case-control studies team

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Abstract

We present early estimates (up to week 4 of 2011) of the 2010/11 seasonal influenza vaccine effectiveness in preventing medically attended influenza-like illness (ILI) laboratory confirmed as influenza. Practitioners from seven European sentinel networks systematically swabbed ILI patients. We included patients meeting the European Union ILI case definition and swabbed less than eight days after symptom onset. Laboratoryconfirmed influenza cases were compared with negative controls. The adjusted vaccine effectiveness was 42.3% (95% CI: –7.3 to 69.0%), suggesting moderate protection of the seasonal vaccine.

Original languageEnglish
Article number19818
JournalEurosurveillance
Volume16
Issue number11
DOIs
Publication statusPublished - 17 Mar 2011

Bibliographical note

Publisher Copyright:
© 2011, European Centre for Disease Prevention and Control (ECDC). All rights reserved.

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