刊名:Physica A: Statistical Mechanics and its Applications
出版年:2017
出版时间:15 March 2017
年:2017
卷:470
期:Complete
页码:146-153
全文大小:592 K
卷排序:470
文摘
We formulate an epidemic model with random perturbation and varying population size. This model admits a unique global positive solution by constructing Lyapunov function. Sufficient conditions of extinction and persistence depend on constant contact rate. We carry out several numerical simulations to illustrate the main results.