Analysis of an HIV/AIDS model with public-health information campaigns and individual withdrawal

Farai Nyabadza, Christinah Chiyaka, Zindoga Mukandavire, Senelani D. Hove-Musekwa

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


Primary prevention measures designed to alter susceptibility and/or reduce exposure of susceptible individuals to diseases, remain the mainstay in the fight against HIV/AIDS. A model for HIV/AIDS, that investigates the reduction in infection by advocating for sexual behavior change through public-health information campaigns and withdrawal of individuals with AIDS from sexual activity is proposed and analyzed. The contact rate is modeled using an incidence function with saturation that depends on the number of infectives. The dynamics of the model is determined using the model reproduction number ${\cal R}-0$. Numerical simulations are presented to illustrate the role of some key epidemiological parameters. The results from the study demonstrate that an increase in the rate of dissemination of effective public-health information campaigns results in a decrease in the prevalence of the disease. Similarly, an increase in the fraction of individuals with AIDS who withdraw from sexual activities reduces the burden of the disease.

Original languageEnglish
Pages (from-to)357-375
Number of pages19
JournalJournal of Biological Systems
Issue number2
Publication statusPublished - Jun 2010
Externally publishedYes


  • Contact Rate
  • Information Campaigns
  • Reproduction Number
  • Stability

ASJC Scopus subject areas

  • Ecology
  • Agricultural and Biological Sciences (miscellaneous)
  • Applied Mathematics


Dive into the research topics of 'Analysis of an HIV/AIDS model with public-health information campaigns and individual withdrawal'. Together they form a unique fingerprint.

Cite this