ADUMASHI, F. A.; OBOHWEMU, K. O.; ABAYOMI, G. O.; KENNETH, I. O.; EKWULUO, C. E.; ITUAH, F. Immunisation in the 21st Century: Foundations, Challenges, and Strategic Directions for Global Health. Advances in Social Sciences Research Journal, [S. l.], v. 13, n. 02, p. 107–124, 2026. DOI: 10.14738/assrj.1302.19921. Disponível em: https://journals.scholarpublishing.org/index.php/ASSRJ/article/view/19921. Acesso em: 25 feb. 2026.