Severe infantile pertussis in Nigeria, report of two cases: the need for review of current pertussis vaccination schedule. The Nigerian Health Journal, [S. l.], v. 19, n. 1, p. 46–51, 2020. DOI: 10.60787/tnhj.v19i1.424. Disponível em: https://tnhjph.com/index.php/tnhj/article/view/424. Acesso em: 14 mar. 2025.