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Analysis on a diffusive SIS epidemic model with logistic source

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Abstract

In this paper, we are concerned with an SIS epidemic reaction–diffusion model with logistic source in spatially heterogeneous environment. We first discuss some basic properties of the parabolic system, including the uniform upper bound of solutions and global stability of the endemic equilibrium when spatial environment is homogeneous. Our primary focus is to determine the asymptotic profile of endemic equilibria (when exist) if the diffusion (migration) rate of the susceptible or infected population is small or large. Combined with the results of Li et al. (J Differ Equ 262:885–913, 2017) where the case of linear source is studied, our analysis suggests that varying total population enhances persistence of infectious disease.

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Correspondence to Huicong Li.

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Li, B., Li, H. & Tong, Y. Analysis on a diffusive SIS epidemic model with logistic source. Z. Angew. Math. Phys. 68, 96 (2017). https://doi.org/10.1007/s00033-017-0845-1

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  • DOI: https://doi.org/10.1007/s00033-017-0845-1

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