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Traveling waves of a delayed diffusive SIR epidemic model

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  • This paper is concerned with the minimal wave speed of a delayed diffusive SIR epidemic model with Holling-II incidence rate and constant external supplies. By presenting the existence and nonexistence of traveling wave solutions for any positive wave speed, the minimal wave speed is established. In particular, the minimal wave speed decreases when the latency of infection increases. Biologically speaking, the longer the latency of infection in a vector is, the slower the disease spreads.
    Mathematics Subject Classification: Primary: 35K57, 35R20; Secondary: 92D25.

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