Risk Factors for Perinatal Transmission of Human Immunodeficiency Virus Type 1 in Women Treated with Zidovudine

Abstract
Maternal, obstetrical, and infant-related factors associated with the risk of perinatal transmission of human immunodeficiency virus type 1 (HIV-1) were identified before the widespread use of zidovudine therapy in pregnant women. The risk factors for transmission when women and infants receive zidovudine are not well characterized.