ENGEL, M. E.; MAYOSI, B. M. Clinical and epidemiological aspects of streptococcus pyogenes pharyngitis and carriage in Africa. SA Heart Journal, [S. l.], v. 10, n. 2, p. 434–439, 2017. DOI: 10.24170/10-2-1802. Disponível em: https://www.journals.ac.za/SAHJ/article/view/1802. Acesso em: 8 oct. 2025.