Stochastic Dynamics of an SIRS Epidemic Model with Ratio-Dependent Incidence Rate

Figure 3

The solution of the stochastic model (8) with initial values 𝑥(0)=0.2, 𝑦(0)=0.15. The parameters are taken as (14), 𝜎₁=0.5, 𝜎₂=0.3.