Propagation dynamics of an epidemic model with infective media connecting two separated networks of populations

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)240-249
Journal / PublicationCommunications in Nonlinear Science and Numerical Simulation
Volume20
Issue number1
Publication statusPublished - Jan 2015

Abstract

Based on the fact that most human pathogens originate from animals, this paper attempts to illustrate the propagation dynamics of some zoonotic infections, which spread in two separated networks of populations (human network I and animal network II) and cross-species (vectors, or infective media). An epidemic time-evolution model is proposed via mean-field approximation and its global dynamics are investigated. It is found that the basic reproduction number in terms of epidemiological parameters and the network structure is the threshold condition determining the propagation dynamics. Further, the influences of various infection rates and contact patterns are verified. Numerical results show that the heterogeneity in connection patterns and inner infection in network I can easily trigger endemic dynamics, but when a pathogen, such as H7N9, has weak infectivity in humans, the effects of animal-animal interactions and the contacts with vectors tend to induce endemic states and enhance the prevalence in all the populations. © 2014 Elsevier B.V.

Research Area(s)

  • Basic reproduction number, Contact network, Epidemic dynamics, Vector

Citation Format(s)

Propagation dynamics of an epidemic model with infective media connecting two separated networks of populations. / Zhu, Guanghu; Chen, Guanrong; Zhang, Haifeng; Fu, Xinchu.

In: Communications in Nonlinear Science and Numerical Simulation, Vol. 20, No. 1, 01.2015, p. 240-249.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review