Epidemiological profile of Covid-19 morbidity and mortality in the State of Piauí: an update of the current scenario. Research, Society and Development, [S. l.], v. 9, n. 8, p. e803986091, 2020. DOI: 10.33448/rsd-v9i8.6091. Disponível em: https://www.rsdjournal.org/rsd/article/view/6091. Acesso em: 15 dec. 2025.