The HIV/AIDS pandemic has reached epidemic proportions in most developing countries. Intervention programs have been introduced in order to slow down the spread of the disease. However, due to the cost of antiretroviral drugs, only a proportion of HIV sufferers has access to treatment. This study investigates the effect of treating a proportion of infected  mothers and their off-springs on the spread of HIV/AIDS bearing in mind that treated mothers may go on to produce more infected babies and treated juveniles may live long enough to adulthood. In this study we derive two threshold parameters which describe the dynamics of the disease in a population. We also carry out some numerical studies to illustrate the theoretical results.

This is a joint work with Edward Lungu.