Alhassan, A., Momoh, A. A., Abdullahi, S. A., and Audu, A. “Mathematical Model for the Transmission Dynamics of Typhoid Fever Infection With Treatment”. International Journal of Science for Global Sustainability 7, no. 2 (July 26, 2021): 13. Accessed May 30, 2026. https://www.fugus-ijsgs.com.ng/index.php/ijsgs/article/view/25.