Global Stability of Multigroup SIRS Epidemic Model with Varying Population Sizes and Stochastic Perturbation around Equilibrium

Figure 1

Deterministic trajectories of SIRS model (1) for initial condition 𝑆₁(0)=2, 𝐼₁(0)=4, 𝑅₁(0)=6, 𝑆₂(0)=9, 𝐼₂(0)=4, and 𝑅₂(0)=0.5.