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Information gathered so far from published studies attest the existence of a complex relationship between tobacco smoking and the severity of COVID‐19. We investigated the association between smoking habits and the severity of COVID‐19 in patients hospitalized in university‐affiliated hospitals in Lyon, France. Baseline sociodemographic, clinical and biological characteristics of adult COVID‐19 hospitalized...
The aim of this study was to estimate influenza vaccine effectiveness (IVE) against laboratory-confirmed influenza among hospitalized patients. A case–control investigation was based on the prospective surveillance of influenza-like illness (ILI) during five flu seasons. We compared influenza-positive cases and influenza-negative controls. Unadjusted overall IVE was 62% (95% confidence interval 24%...
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