Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 523, Issue -, Pages 894-907Publisher
ELSEVIER
DOI: 10.1016/j.physa.2019.04.228
Keywords
Stochastic SEI epidemic model; Stationary distribution; Ergodicity; Extinction; Saturation incidence and logistic growth
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Funding
- National Natural Science Foundation of P.R. China [11701209]
- Science and Technology Research Project of Jilin Provincial Department of Education of China [JJKH20180462KJ]
- Education Department of Hainan province [Hnky2017ZD-14]
- Hainan Provincial Natural Science Foundation of China [119QN205]
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In this paper, we investigate the dynamical behavior of a stochastic SEI epidemic model with saturation incidence and logistic growth. Firstly, by constructing a suitable stochastic Lyapunov function, we establish sufficient conditions for the existence and uniqueness of an ergodic stationary distribution of the solutions to the model. Then we obtain sufficient conditions for extinction of the disease in two cases, that is, the first case is that the susceptible population survival and infected and exposed populations extinction: the second case is that all the populations extinction. (C) 2019 Published by Elsevier B.V.
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