“Assessing the Impact of Polio Eradication Initiative and Routine Immunization in Zamfara State, North‑West, Nigeria”, njhs, vol. 15, no. 1, pp. 27–29, Nov. 2023, Accessed: Feb. 25, 2026. [Online]. Available: https://nigerianhsjournal.ng/index.php/njhs/article/view/124