Stochastic Extinction in an SIRS Epidemic Model Incorporating Media Coverage

Figure 2

The paths of 𝑆(𝑡), 𝐼(𝑡), and 𝑅(𝑡) for the stochastic model (3) with initial values (𝑆(0),𝐼(0),𝑅(0))=(9,1,0). The parameters are taken as (41) (𝑅₀=7.407).

(a) 𝜎=0.1

(b) 𝜎=0.02