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A diffusive SIS epidemic model incorporating the media coverage impact in the heterogeneous environment

  • * Corresponding author

    * Corresponding author 
The work is partially supported by the NSF of China (Grant No. 11501494,11571301), NSF of Jiangsu Province (BK20151305, BK20151288).
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  • To explore the impact of media coverage and spatial heterogeneity of environment on the prevention and control of infectious diseases, a spatial-temporal SIS reaction-diffusion model with the nonlinear contact transmission rate is proposed. The nonlinear contact transmission rate is spatially dependent and introduced to describe the impact of media coverage on the transmission dynamics of disease. The basic reproduction number associated with the disease in the heterogeneous environment is established. Our results show that the degree of mass media attention plays an important role in preventing the spreading of infectious diseases. Numerical simulations further confirm our analytical findings.

    Mathematics Subject Classification: Primary:35B40;Secondary:92D30.


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  • Figure 1.  For $m=1$, the solution $(S(x,t),I(x,t))$ stabilizes to a positive equilibrium.

    Figure 2.  For $m=5$, the infected individuals $I(x,t)$ with the given initial condition decays to zero quickly(left); the susceptible individuals $S(x,t)$ stabilizes to a positive steady-state (right).

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