Figure 7

\(E_{p1}\) is globally asymptotically stable in Case B.2: (a) Data 2, \(\xi =1.8, I_{T}=360\), \(\Sigma _{2}\) does not exist; (b) Data 2, \(\xi =2.75, I_{T}=360\), \(\Sigma _{2}=\{(S,I)\in \Omega _{2}: \frac{I_{T}}{\xi }< S< S^{+}\}\); \(E_{p2}\) is globally asymptotically stable in Case B.2: (c) Data 2, \(\xi =3.9, I_{T}=360\), \(\Sigma _{2}=\{(S,I)\in \Omega _{2}: \frac{I_{T}}{\xi }< S< S^{+}\}\); (d) Data 2, \(\xi =5.5, I_{T}=360\), \(\Sigma _{2}=\{(S,I)\in \Omega _{2}: S^{-}< S< S^{+}\}\)