Acta mathematica scientia,Series A ›› 2020, Vol. 40 ›› Issue (1): 221-233.

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Dynamics of a Nonautonomous SIRI Epidemic Model with Random Perturbations

Zhongwei Cao1(),Xiangdan Wen2,*(),Wei Feng3,Li Zu4   

  1. 1 Department of Applied Mathematics, Jilin University of Finance and Economics, Changchun 130117
    2 Department of Mathematics, Yanbian University, Jilin Yanji 130002
    3 Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun 130033
    4 Department of Mathematics and Statistics, Hainan Normal University, Haikou 571158
  • Received:2018-08-29 Online:2020-02-26 Published:2020-04-08
  • Contact: Xiangdan Wen E-mail:caozw963@sina.com;xdwen0502@yeah.net
  • Supported by:
    国家自然科学基金(11701209);吉林省科技厅青年基金(20160520110JH);吉林省教育厅(JJKH20180462KJ);海南省教育厅(Hnky2017ZD-14);海南省自然科学基金(119QN205)

Abstract:

In this paper, we study the dynamics of a stochastic nonautonomous Susceptible-Infective-Removed-Infective (SIRI) epidemic model. By employing the Lyapunov function method, we show that there exists at least one nontrivial positive T-periodic solution of the system. Moreover, sufficient conditions for extinction of the disease are established. Some numerical simulations are carried out to illustrate the theoretical results.

Key words: Stochastic SIRI epidemic model, Periodic solutions, Extinction, Lyapunov function

CLC Number: 

  • O211.6
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