The periodic traveling waves in a diffusive periodic SIR epidemic model with nonlinear incidence

Weixin Wu and Zhidong Teng

Chaos, Solitons & Fractals, 2021, vol. 144, issue C

Abstract: In this paper, a reaction-diffusion SIR epidemic model is proposed. It takes into account the individuals mobility, the time periodicity of the infection rate and recovery rate, and the general nonlinear incidence function, which contains a number of classical incidence functions. In our model, due to the introduction of the general nonlinear incidence function, the boundedness of the infected individuals can not be obtained, so we study the existence and nonexistence of periodic traveling wave solutions of original system with the aid of auxiliary system. The basic reproduction number R0 and the critical wave speed c* are given. We obtained the existence and uniqueness of periodic traveling waves for each wave speed c>c* using the Schauder’s fixed points theorem when R0>1. The nonexistence of periodic traveling waves for two cases (i) R0>1 and 0Keywords: Reaction diffusion; SIR epidemic model; Periodic traveling waves; T-map; Fixed point theorem; Nonlinear incidence (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:144:y:2021:i:c:s0960077921000369

DOI: 10.1016/j.chaos.2021.110683

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