A stochastic epidemic model with infectivity in incubation period and homestead-isolation on the susceptible

A stochastic epidemic model with infectivity rate in incubation period and homestead-isolation on the susceptible is developed with the aim of revealing the effect of stochastic white noise on the long time behavior. A good understanding of extinction and strong persistence in the mean of the disease is obtained. Also, we derive sufficient criteria for the existence of a unique ergodic stationary distribution of the model. Our theoretical results show that the suitably large noise can make the disease extinct while the relatively small noise is advantageous for persistence of the disease and stationary distribution.

Automated summary

The study develops a stochastic epidemic model with infectivity rate in the incubation period and homestead-isolation on the susceptible, aiming to reveal the effect of stochastic white noise on long term behavior. The results show that large noise can lead to disease extinction, while small noise is beneficial for disease persistence and stationary distribution. Additionally, sufficient criteria are derived for the existence of a unique ergodic stationary distribution of the model.