Acta mathematica scientia,Series B ›› 2021, Vol. 41 ›› Issue (4): 1385-1404.doi: 10.1007/s10473-021-0421-9

• Articles • Previous Articles    

A DIFFUSIVE SVEIR EPIDEMIC MODEL WITH TIME DELAY AND GENERAL INCIDENCE

Jinling ZHOU, Xinsheng MA, Yu YANG, Tonghua ZHANG   

  1. 1. Department of Mathematics, Zhejiang International Studies University, Hangzhou 310023, China;
    2. School of Statistics and Mathematics, Shanghai Lixin University of Accounting and Finance, Shanghai 201209, China;
    3. Department of Mathematics, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
  • Received:2020-03-23 Revised:2020-10-01 Online:2021-08-25 Published:2021-09-01
  • Contact: Yu YANG E-mail:yangyu@lixin.edu.cn

Abstract: In this paper, we consider a delayed diffusive SVEIR model with general incidence. We first establish the threshold dynamics of this model. Using a Nonstandard Finite Difference (NSFD) scheme, we then give the discretization of the continuous model. Applying Lyapunov functions, global stability of the equilibria are established. Numerical simulations are presented to validate the obtained results. The prolonged time delay can lead to the elimination of the infectiousness.

Key words: SVEIR model, vaccination, Lyapunov function, nonstandard finite difference method

CLC Number: 

  • 34F05
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