Fig. 3

The globally asymptotically stable IEs \((S^*(x),I^*(x))\) with the set of parameters (36). Therefore, \(\mathfrak {R}_0\approx 1.543\).
The globally asymptotically stable IEs \((S^*(x),I^*(x))\) with the set of parameters (36). Therefore, \(\mathfrak {R}_0\approx 1.543\).