A(H1N1)pdm09 influenza vaccine effectiveness to prevent influenza and/or pneumonia: a cohort study between 11 June –31 December 2009.
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OR – odds ratio; 95% CI –95% confidence interval. *Unadjusted. **Adjusted for sex, age, underlying medical conditions and GP visits (stratified by age analysis adjusted only for GP visits).
创建时间：
2013-06-20
