Vaccine
January 2025
Introduction: Nationwide databases from large countries may provide real-world evidence about COVID-19 vaccine effectiveness (VE). This study sought to assess the VE of BNT162b2 and CoronaVac against COVID-19-related severe outcomes in school-aged children and adolescents during the Omicron wave of the COVID-19 pandemic in Brazil.
Methods: A nationwide population-based cohort study compared the incidence risk ratios (IRRs) of hospitalization due to COVID-19-associated severe acute respiratory syndrome (SARS), need for invasive ventilatory support, and death among school-aged children (age 5 to 11 years) and adolescents (age 12 to 17 years), stratified by vaccination status (none, one, or two doses), in 2022.
Background: Persistent symptoms and exercise intolerance have been reported after COVID-19, even months after the acute disease. Although, the long-term impact on exercise capacity and health-related quality of life (HRQoL) is still unclear.
Research Question: To assess the long-term functional capacity and HRQoL in patients hospitalized due to COVID-19.