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Integral equation models for endemic infectious diseases

Summary

Endemic infectious diseases for which infection confers permanent immunity are described by a system of nonlinear Volterra integral equations of convolution type. These constant-parameter models include vital dynamics (births and deaths), immunization and distributed infectious period. The models are shown to be well posed, the threshold criteria are determined and the asymptotic behavior is analysed. It is concluded that distributed delays do not change the thresholds and the asymptotic behaviors of the models.

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This work was partially supported by NIH Grant AI 13233.

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Hethcote, H.W., Tudor, D.W. Integral equation models for endemic infectious diseases. J. Math. Biology 9, 37–47 (1980). https://doi.org/10.1007/BF00276034

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  • DOI: https://doi.org/10.1007/BF00276034

Key words

  • Epidemiology
  • Endemic infectious diseases
  • Deterministic models
  • Thresholds
  • Distributed delays
  • Stability