The Role of Vaccination in Reducing Infant and Childhood Mortality: A Systematic Review. International Journal of Hygiene and Environmental Health , [S. l.], v. 265, n. 44-66, p. 227–244, 2025. Disponível em: https://wos-emr.net/index.php/IJHEH/article/view/20. Acesso em: 21 may. 2026.