BHATIA, V.; PARIDA, S. .; SAHOO, D.; ANTONY, A.; MITRA , A. Effectiveness of universal BCG immunisation in reducing the incidence and mortality of COVID-19: A secondary data analysis. Nigerian Medical Journal, [S. l.], v. 62, n. 2, p. 60–65, 2022. DOI: 10.60787/nmj.v62i2.12. Disponível em: https://nigerianmedjournal.org/index.php/nmj/article/view/12. Acesso em: 24 apr. 2026.