Ojo OB, Attah NE. Smallpox in Yorubaland: The Role of Indigenous Vaccinators, 1925-1955. ISSEJ [Internet]. 2026 May 15 [cited 2026 May 21];4(2):63-72. Available from: https://bluemarkpublishers.com/index.php/ISSEJ/article/view/835