Nwafor, Helen Simon, Daprim Samuel Ogaji, Magret Akpan, and Christiana Ebele Dike. “Interventions to Improve Vaccination Uptake: A Systematic Review and Meta-Analysis”. International journal of health sciences 10, no. S1 (January 2, 2026): 1–16. Accessed May 4, 2026. http://www.sciencescholar.us/journal/index.php/ijhs/article/view/15854.