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. Laboratory-confirmed 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.
Publication types
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Multicenter Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Adolescent
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Adult
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Aged
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Case-Control Studies
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Child
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Disease Outbreaks* / prevention & control
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Disease Outbreaks* / statistics & numerical data
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Europe / epidemiology
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European Union
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Female
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Humans
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Infant
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Infant, Newborn
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Influenza A Virus, H1N1 Subtype / immunology*
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Influenza Vaccines / administration & dosage*
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Influenza Vaccines / immunology
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Influenza, Human / epidemiology
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Influenza, Human / immunology*
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Influenza, Human / prevention & control*
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Influenza, Human / virology
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Male
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Middle Aged
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Sentinel Surveillance
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Treatment Outcome
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Vaccination / statistics & numerical data*
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Young Adult