Some asymptotic properties of seirs models with nonlinear incidence and random delays

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Abstract

This paper presents the dynamics of mosquitoes and humans with general nonlinear incidence rate and multiple distributed delays for the disease. The model is a SEIRS system of delay differential equations. The normalized dimensionless version is derived; analytical techniques are applied to find conditions for deterministic extinction and permanence of disease. The BRN R0 and ESPR E(e−(µvT1+µT 2 ) ) are computed. Conditions for deterministic extinction and permanence are expressed in terms of R0 and E(e−(µvT1+µT2 ) ) and applied to a P. vivax malaria scenario. Numerical results are given.

Original languageEnglish
Pages (from-to)461-481
Number of pages21
JournalNonlinear Analysis: Modelling and Control
Volume25
Issue number3
DOIs
StatePublished - 2020

Scopus Subject Areas

  • Analysis
  • Applied Mathematics

Keywords

  • Basic reproduction number
  • Endemic equilibrium
  • Extinction rate
  • Lyapunov functionals techniques
  • Permanence in the mean

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