Enoch, B. T.Ashezua, T, T.Somma, Samuel Abu2025-04-142021-12-02http://repository.futminna.edu.ng:4000/handle/123456789/663In this paper, we apply three semi-analytical methods, viz: the Differential Transform Method (DTM), Homotopy Perturbation Method (HPM) and the Variational Iteration Method (VIM) to compute approximate solutions of a continuous mathematical model of Shigella diarrhea comprising of a non-constant population and a deterministic model on the impact of stress on the dynamics and treatment of Tuberculosis.enArticle