Figure 2

Comparison of solutions obtained by NSFD and RK4 numerical schemes for \(F_{0}\) with an initial condition \((S(0), E(0), I(0), R(0))=(0.1, 0.1, 0.1, 0.1)\) and step size \(h=1.0\). Both the schemes converge to the true steady state of \(F_{0}\) with \(\mathcal{R}_{0}=0.2167<1\)