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Global dynamics of a Vector‐Borne disease model with two delays and nonlinear transmission rate
Authors:Dan Tian  Haitao Song
Institution:1. Complex Systems Research Center, Shanxi University, Taiyuan, China;2. School of Mathematical Sciences, Shanxi University, Taiyuan, China;3. Laboratory of Mathematical Parallel Systems (LAMPS), Department of Mathematics and Statistics, York University, Toronto, Canada
Abstract:In this paper, we investigate a Vector‐Borne disease model with nonlinear incidence rate and 2 delays: One is the incubation period in the vectors and the other is the incubation period in the host. Under the biologically motivated assumptions, we show that the global dynamics are completely determined by the basic reproduction number R0. The disease‐free equilibrium is globally asymptotically stable if R0≤1; when R0>1, the system is uniformly persistent, and there exists a unique endemic equilibrium that is globally asymptotically. Numerical simulations are conducted to illustrate the theoretical results.
Keywords:global stability  Lyapunov functional  nonlinear transmission rate  two delays  vector‐host epidemic model
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