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Travelling Wave Solutions in Multigroup Age-Structured Epidemic Models

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Abstract

Age-structured epidemic models have been used to describe either the age of individuals or the age of infection of certain diseases and to determine how these characteristics affect the outcomes and consequences of epidemiological processes. Most results on age-structured epidemic models focus on the existence, uniqueness, and convergence to disease equilibria of solutions. In this paper we investigate the existence of travelling wave solutions in a deterministic age-structured model describing the circulation of a disease within a population of multigroups. Individuals of each group are able to move with a random walk which is modelled by the classical Fickian diffusion and are classified into two subclasses, susceptible and infective. A susceptible individual in a given group can be crisscross infected by direct contact with infective individuals of possibly any group. This process of transmission can depend upon the age of the disease of infected individuals. The goal of this paper is to provide sufficient conditions that ensure the existence of travelling wave solutions for the age-structured epidemic model. The case of two population groups is numerically investigated which applies to the crisscross transmission of feline immunodeficiency virus (FIV) and some sexual transmission diseases.

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Authors and Affiliations

  1. UMR CNRS 5466 MAB and INRIA Futurs Anubis, Université of Bordeaux 2, 146 rue Léo Saignat, 33076, Bordeaux, France

    Arnaut Ducrot

  2. Faculte des Sciences et Techniques, Université du Havre, B. P. 540, 76058, Le Havre, France

    Pierre Magal

  3. Department of Mathematics, University of Miami, Coral Gables, FL, 33124-4250, USA

    Shigui Ruan

Authors
  1. Arnaut Ducrot
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  2. Pierre Magal
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  3. Shigui Ruan
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Correspondence to Shigui Ruan.

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Communicated by P. Rabinowitz

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Ducrot, A., Magal, P. & Ruan, S. Travelling Wave Solutions in Multigroup Age-Structured Epidemic Models. Arch Rational Mech Anal 195, 311–331 (2010). https://doi.org/10.1007/s00205-008-0203-8

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  • DOI: https://doi.org/10.1007/s00205-008-0203-8

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