Abstract
In this paper, we consider two SEIR epidemic models with distributed delay in random environments. First of all, by constructing a suitable stochastic Lyapunov function, we obtain the existence of stationarity of the positive solution to the stochastic autonomous system. Then we establish sufficient conditions for extinction of the disease. Finally, by using Khasminskii's theory of periodic solutions, we prove that the stochastic nonautonomous epidemic model admits at least one nontrivial positive T-periodic solution under a simple condition.
| Original language | English |
|---|---|
| Pages (from-to) | 2479-2500 |
| Number of pages | 22 |
| Journal | Discrete and Continuous Dynamical Systems - Series B |
| Volume | 22 |
| Issue number | 6 |
| DOIs | |
| State | Published - Aug 2017 |
| Externally published | Yes |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Keywords
- Extinction
- Lyapunov function
- Periodic solution
- Stationary solution
- Stochastic SEIR epidemic model
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