The use of antiretroviral therapy during late pregnancy, intrapartum, and immediately postpartum prevents a high proportion of vertical transmission. Potential means of decreasing HIV transmission through breastfeeding, along with the risks and benefits of early weaning, need to be further evaluated. The potential impact of early weaning interventions on the breastfeeding habits of the HIV uninfected population needs to be considered as well. This study seeks to identify a way to make breastfeeding safe for HIV infected women who choose to breastfeed.