In this article, we present some stochastic non-linear epidemic models related to Covid-19. It is very hard to get exact solutions for the non-linear such models, but we have successfully obtained exact solutions of some suitable non-linear stochastic cases. The general stochastic logistic model is solved; and some properties related to functions of Wiener process are studied

Epidemic non-linear stochastic models- Wiener processes- Exact stochastic solutions Stochastic logistic models.