Effectiveness of seasonal 2010/11 and pandemic influenza A(H1N1)2009 vaccines in preventing influenza infection in the United Kingdom: mid-season analysis 2010/11

R. Pebody, P. Hardelid, D.M. Fleming, J. McMenamin, N. Andrews, C. Robertson, D. R. Thomas, P. SebastianPillai, J. Ellis, W. Carman

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Abstract

This study provides mid-season estimates of the effectiveness of 2010/11 trivalent influenza vaccine and previous vaccination with monovalent influenza A(H1N1)2009 vaccine in preventing confirmed influenza A(H1N1)2009 infection in the United Kingdom in the 2010/11 season. The adjusted vaccine effectiveness was 34% (95% CI: -10 - 60%) if vaccinated only with monovalent vaccine in the 2009/10 season; 46% (95% CI: 7 - 69%) if vaccinated only with trivalent influenza vaccine in the 2010/11 season and 63% (95% CI: 37 - 78%) if vaccinated in both seasons.
Original languageEnglish
Pages (from-to)8-13
Number of pages6
JournalEurosurveillance
Volume16
Issue number6
Publication statusPublished - 10 Feb 2011

Keywords

  • statistics
  • influenza A virus, H1N1 Subtype
  • pandemic influenza
  • influenza
  • vaccination

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