Dynamical Analysis of a Reaction-Diffusion Syphilis Model with a Fixed Latent Period and Spatial Heterogeneity
In this paper,a reaction-diffusion Syphilis model with a fixed latent pe-riod and spatial heterogeneity is formulated to study the transmission dynamics of syphilis among population.Firstly,the authors discuss the global existence and at-tractor of the solution for the system.Secondly,based on the definition the next generation operator for the disease compartment model,as the threshold of the dy-namics,the basic reproduction number R0 is derived.Specifically,the authors show that the disease-free steady state is globally attractive when R0<1 and the uniform persistence of the disease is proved by the persistence theory for dissipative system.Finally,in space homogeneous case,the explicit expression of the basic reproduc-tion number R0 is derived.Moreover,the authors prove the global stability of the disease-free and the endemic equilibria by Fluctuation lemma.