Meningitis: epidemiological aspects of reported cases in the state of Piauí, Brazil. Research, Society and Development, [S. l.], v. 9, n. 2, p. e80922082, 2020. DOI: 10.33448/rsd-v9i2.2082. Disponível em: https://www.rsdjournal.org/rsd/article/view/2082. Acesso em: 5 dec. 2025.