Nevirapine (NVP) Use to Prevent Mother-to-Child Transmission of HIV

HIV can be transmitted from an HIV infected mother to her infant through her breast milk. The purpose of this study is to determine whether giving infants of HIV infected mothers the anti-HIV drug nevirapine (NVP) for six weeks will reduce the risk of HIV transmission. Study hypothesis: Six weeks of nevirapine prophylaxis provided to the infant will decrease HIV transmission through breastfeeding.