Threshold Dynamics and the Density Function of the Stochastic Coronavirus Epidemic Model

Since November 2019, each country in the world has been affected by COVID-19, which claimed more than four million lives. As an infectious disease, COVID-19 a stronger transmission power and faster propagation speed. In fact, environmental noise is inevitable important factor real world. This paper mainly gives new random disease system under infection rate noise. We give existence uniqueness of solution discuss ergodic stationary distribution extinction conditions system. The probability density function stochastic studied. Some digital simulations are used to demonstrate