Efficacy and effectiveness of influenza vaccines in elderly people: a systematic review.

@article{Jefferson2005EfficacyAE,
  title={Efficacy and effectiveness of influenza vaccines in elderly people: a systematic review.},
  author={Tom Jefferson and Daniela Rivetti and Alessandro Rivetti and Michael Rudin and Carlo Di Pietrantonj and Vittorio Demicheli},
  journal={Lancet},
  year={2005},
  volume={366 9492},
  pages={1165-74}
}
BACKGROUND Influenza vaccination of elderly individuals is recommended worldwide. Our aim was to review the evidence of efficacy and effectiveness of influenza vaccines in individuals aged 65 years or older. METHODS We searched five electronic databases to December, 2004, in any language, for randomised (n=5), cohort (n=49), and case-control (n=10) studies, assessing efficacy against influenza (reduction in laboratory-confirmed cases) or effectiveness against influenza-like illness (reduction… CONTINUE READING
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