Background: The countermeasures used to mitigate the COVID-19 pandemic might have impacted mental health of populations around world. Methods: We data from Brazilian Longitudinal Study Health (ELSA-Brasil), a prospective cohort, characterize participants between 2018 (wave-3) and 2020 (wave-COVID). Clinical Interview Scheduled-Revised (CIS-R), validated questionnaire, was assess prevalence comm...