Global stability of an SEI epidemic model with general contact rate. (English) Zbl 1062.92062

Summary: This paper considers an SEI epidemic model with general contact rate that incorporates constant recruitment and infectious force in the latent period and infected period. By means of Lyapunov functions and LaSalle’s invariant set theorem, we proved global asymptotical stability of the disease-free equilibrium and the epidemic equilibrium by using the Poincaré-Bendixson property.


92D30 Epidemiology
34D23 Global stability of solutions to ordinary differential equations
34C60 Qualitative investigation and simulation of ordinary differential equation models
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