Jianhong Wu

Bifurcation structure of an SIRS epidemic model with nonlinear incidence rate: Discovery of Hopf-isola phenomena

We study the bifurcation structure of a class of SIRS epidemic models with a nonlinear incidence rate of the form k I p S 1 + ω I q , where the exponents p and q are treated as general parameters. By reducing the model to a planar S - I system, we analyze the existence and degene...