Dynamics Analysis of a Stochastic SIR Epidemic Model

Figure 2

Solutions of model (3) with different noise. Other parameters and initial condition are the same as Figure 1. (a) 𝜎₁=0, 𝜎₂=0.06, and 𝜎₃=0 and (b) 𝜎₁=1.7 and 𝜎₂=𝜎₃=0.

(a)

(b)