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. 2013 Jun;56(12):1774-7.
doi: 10.1093/cid/cit124. Epub 2013 Feb 28.

Effectiveness of influenza vaccine for preventing laboratory-confirmed influenza hospitalizations in adults, 2011-2012 influenza season

H Keipp Talbot  1 , Yuwei Zhu, Qingxia Chen, John V Williams, Mark G Thompson, Marie R Griffin
Affiliations

Effectiveness of influenza vaccine for preventing laboratory-confirmed influenza hospitalizations in adults, 2011-2012 influenza season

H Keipp Talbot et al. Clin Infect Dis. 2013 Jun.

Abstract

During the 2011-2012 influenza season, we enrolled hospitalized adults with acute respiratory illness and tested each for influenza using reverse transcription polymerase chain reaction. Influenza vaccination was verified in 35% (6/17) of adults with influenza-associated hospitalizations compared to 64% (97/152) of test-negative controls; adjusted vaccine effectiveness was 71.4% (95% confidence interval, 17.1%-94.9%).

Keywords: effectiveness; influenza vaccine; older adults.

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