Survival and Stationary Distribution in a Stochastic SIS Model

Figure 5

Computer simulation of a single path of 𝐼(𝑡) for the SDE model (2) with initial value (𝑆(0),𝐼(0))=(1.9,1.9) and its corresponding deterministic model (1) for parameter values Λ=2, 𝜆=0.4, 𝜇=0.4, 𝜖=0.2, 𝛾=0.2, 𝜎₁=0.1, 𝜎₂=0.1, and 𝜎₃=0.33.