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Asymptotic behavior of a stochastic SIR model with general incidence rate and nonlinear Lévy jumps
Qing Yang1, Xinhong Zhang1, Daqing Jiang1,2
1College of Science, China University of Petroleum (East China), Qingdao, 266580 People's Republic of China.
Abstract:
In this paper, we consider a stochastic SIR epidemic model with general disease incidence rate and perturbation caused by nonlinear white noise and L vy jumps. First of all, we study the existence and uniqueness of the global positive solution of the model. Then, we establish a threshold by investigating the one-dimensional model to determine the extinction and persistence of the disease. To verify the model has an ergodic stationary distribution, we adopt a new method which can obtain the sufficient and almost necessary conditions for the extinction and persistence of the disease. Finally, some numerical simulations are carried out to illustrate our theoretical results.
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