Figure 5From: Rich dynamics of a delayed SIRS epidemic model with two-age structure and logistic growth(a): The asymptotical stability of \(E_{\ast}\) in Case (IV). (b): The distributions of \(i(t,a)\) and \(r(t,a)\) about time and infection age in Case (IV). (c): The case of the Hopf bifurcation in Case (IV). (d): The periodic distributions of \(i(t,a)\) and \(r(t,a)\) about time and infection age in Case (IV)Back to article page