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Updated: Dec 7, 2025

Vibrio cholerae: Model Organism to Study Bacterial Pathogenesis - Interview
Published on: May 28, 2007
Global dynamics and optimal control of a cholera transmission model with vaccination strategy and multiple pathways
Chenwei Song1, Rui Xu1, Ning Bai1
1Complex Systems Research Center, Shanxi University, Taiyuan 030006, Shanxi, P. R. China.
Abstract:
In this paper, we consider a cholera infection model with vaccination and multiple transmission pathways. Dynamical properties of the model are analyzed in detail. It is shown that the disease-free equilibrium is globally asymptotically stable if the basic reproduction number is less than unity; the endemic equilibrium exists and is globally asymptotically stable if the basic reproduction number is greater than unity. In addition, the model is successfully used to fit the real disease situation of cholera outbreak in Somalia. We consider an optimal control problem of cholera transmission with vaccination, quarantine, treatment and sanitation control strategies, and use Pontryagin's minimum principle to determine the optimal control level. The optimal control problem is solved numerically.
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