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A delayed vaccinated epidemic model with nonlinear incidence rate and Lévy jumps
Kuangang Fan1, Yan Zhang2, Shujing Gao2
1School of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China.
Abstract:
A stochastic susceptible-infectious-recovered epidemic model with nonlinear incidence rate is formulated to discuss the effects of temporary immunity, vaccination, and Le.´vy jumps on the transmission of diseases. We first determine the existence of a unique global positive solution and a positively invariant set for the stochastic system. Sufficient conditions for extinction and persistence in the mean of the disease are then achieved by constructing suitable Lyapunov functions. Based on the analysis, we conclude that noise intensity and the validity period of vaccination greatly influence the transmission dynamics of the system.
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