Fig. 5

Influence of infection rate in seniors (\(\gamma _{3}\)) and recovery rate (\(r\)) on \({\mathscr {R}}_{0}\); (a) presents the 3D mesh plot, (b) shows the corresponding contour plot.

Influence of infection rate in seniors (\(\gamma _{3}\)) and recovery rate (\(r\)) on \({\mathscr {R}}_{0}\); (a) presents the 3D mesh plot, (b) shows the corresponding contour plot.