Frequency of Bacterial Meningitis in Vaccinated Versus Unvaccinated Children in Age Group 6 Months to 5 Years. Medical Forum Monthly, [S. l.], v. 35, n. 3, 2024. Disponível em: https://medicalforummonthly.com/index.php/mfm/article/view/4338.. Acesso em: 26 dec. 2025.