Dynamics of a Stochastic Multigroup SEIR Epidemic Model

Figure 4

Frequency histograms of paths 𝐼₁(𝑡), 𝐼₂(𝑡) for the system (31) based on 10000 stochastic sumulations for each population at time 𝑡=100, using the EM method with step size 0.001, with initial values 𝐼₁(0)=1, 𝐼₂(0)=1.

(a)

(b)