The Journal of infectious diseases

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• J. Infect. Dis. · Feb 2011

  Effectiveness of seasonal vaccine in preventing confirmed influenza-associated hospitalizations in community dwelling older adults.

  Current evidence supporting the effectiveness of influenza vaccine in preventing hospitalizations in older adults is insufficient. ⋯ Overall, in this moderately well-vaccinated population of older adults, laboratory-confirmed influenza virus accounted for 9.3% (95% confidence interval, 6.6%-12.1%) of all respiratory hospitalizations during 3 influenza seasons, and influenza vaccination prevented 61.2% of such hospitalizations.

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