Abstract:Seasonal flu is a common cause of hospital admission, especially in populations with comorbidities or extreme ages. The objective was to investigate the effectiveness of influenza vaccination in hospitalized laboratory confirmed influenza cases (HLCI). A retrospective case-to-case study of HLCI adults in Catalonia, during the 2017-2018 season was carried out. Differences in means, proportions, factors associated with vaccine effectiveness (VE) and intensive care unit (ICU) were assessed by t-test, Chi-squared … Show more
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