Age-specific vaccine effectiveness of seasonal 2010/2011 and pandemic influenza A(H1N1) 2009 vaccines in preventing influenza in the United Kingdom

Pebody, R.G. and Andrews, Nick and Fleming, D.M. and McMenamin, J. and Cottrell, S. and Smyth, B. and Durnall, H. and Robertson, Chris and Carman, W. and Ellis, J. and Sebastian-Pillai, P. and Zambon, Maria and Hearns, C. and Moore, C. and Thomas, D.R. and Watson, J.M. (2013) Age-specific vaccine effectiveness of seasonal 2010/2011 and pandemic influenza A(H1N1) 2009 vaccines in preventing influenza in the United Kingdom. Epidemiology and Infection, 141 (3). pp. 620-630. ISSN 0950-2688 (https://doi.org/10.1017/S0950268812001148)

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Abstract

An analysis was undertaken to measure age-specific vaccine effectiveness (VE) of 2010/11 trivalent seasonal influenza vaccine (TIV) and monovalent 2009 pandemic influenza vaccine (PIV) administered in 2009/2010. The test-negative case-control study design was employed based on patients consulting primary care. Overall TIV effectiveness, adjusted for age and month, against confirmed influenza A(H1N1)pdm 2009 infection was 56% (95% CI 42–66); age-specific adjusted VE was 87% (95% CI 45–97) in <5-year-olds and 84% (95% CI 27–97) in 5- to 14-year-olds. Adjusted VE for PIV was only 28% (95% CI x6 to 51) overall and 72% (95% CI 15–91) in <5-year-olds. For confirmed influenza B infection, TIV effectiveness was 57% (95% CI 42–68) and in 5- to 14-year-olds 75% (95% CI 32–91). TIV provided moderate protection against the main circulating strains in 2010/2011, with higher protection in children. PIV administered during the previous season provided residual protection after 1 year, particularly in the <5 years age group.

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• Item metadata

  Item type:	Article
  ID code:	41264
  Dates:	Date Event March 2013 Published 13 June 2012 Published Online
  Subjects:	UNSPECIFIED
  Department:	Faculty of Science > Mathematics and Statistics
  Depositing user:	Pure Administrator
  Date deposited:	26 Sep 2012 15:24
  Last modified:	11 Nov 2024 10:09
  Related URLs:	Scopus publication
  URI:	https://strathprints.strath.ac.uk/id/eprint/41264