Journal of
Public Health and Epidemiology

  • Abbreviation: J. Public Health Epidemiol.
  • Language: English
  • ISSN: 2141-2316
  • DOI: 10.5897/JPHE
  • Start Year: 2009
  • Published Articles: 653

Full Length Research Paper

Modeling the combined effects of careless susceptible and infective immigrants on the transmission dynamics of HIV/AIDS epidemics

Mohammed I. Daabo1, Oluwole D. Makinde2 and Baba Seidu3
1Wisconsin International University College, Accra, Ghana. 2Cape Peninsula University of Technology, South Africa. 3University for Development Studies, Navrongo, Ghana.
Email: [email protected]

  •  Accepted: 14 August 2013
  •  Published: 20 September 2013


In this paper, a non-linear mathematical model was proposed to study the combined effect of irresponsible infectives and irresponsible susceptible immigrants on the spread of human immunodeficiency virus/acquired immune deficiency syndrome (HIV/AIDS) in a variable size population. The paper discussed biological feasibility of the model and also presents the basic reproductive number of the model. Also, the equilibrium points of the model are found and stability of the model around the equilibria was also studied. It is realized that at the disease free equilibrium, the model is stable when R0 < 0 and unstable otherwise. Also, the condition for asymptotical stability of the model near the endemic equilibrium is presented. The equilibra of model is given as. Numerical simulations reveal that the presence of infective immigrants significantly affects the spread of the disease and that behavioral change of all classes of individuals should be considered in efforts aimed at controlling the spread of the disease.


Key words: Acquired immune deficiency syndrome (AIDS) epidemic, vertical transmission, stability, infective immigrants, simulation.