A cross-sectional study to assess the impact of the re-emergence of pertussis in children in a tertiary care hospital. SJ Pediatrics and Child Health Africa, Africa, v. 3, n. 2, p. 12, 2026. DOI: 10.51168/t48tmp42. Disponível em: https://pediatrics.sjpublisher.org/index.php/ped/article/view/89. Acesso em: 3 jul. 2026.