The dataset contains information from a cohort of 799 patients admitted in the hospital for COVID-19, characterized with sociodemographic and clinical data. Retrospectively, from November 2020 to Janu
n, number of vaccinated patients in the group; N, total number of patients in the group; CI, confidence interval; IVE, influenza vaccine effectiveness.aSite as a random effect.bAdjusted by week of sym
