Epidemiological aspects of meningitis in children under 9 years old in the metropolitan region of Maringá-Brazil . Research, Society and Development, [S. l.], v. 13, n. 1, p. e9513144828, 2024. DOI: 10.33448/rsd-v13i1.44828. Disponível em: https://ojs34.rsdjournal.org/index.php/rsd/article/view/44828. Acesso em: 28 jun. 2025.