Comparison between cohorts vaccinated and unvaccinated against influenza and pneumococcal infection.

Abstract

This study characterizes possible confounders that might make cohorts vaccinated and unvaccinated against influenza and pneumococcal infection different at baseline, with the hypothesis that the two cohorts are comparable. The similarity between health and demographic data was analysed by a randomized, multivariant study addressed to 10,000 persons aged 65… (More)

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