Preventing mother-to-child transmission of HIV-1 in Africa in the year 2000

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Abstract
Various approaches to preventing mother-to-child transmission (MTCT) of HIV have recently been, or are being, evaluated in developing countries, especially in Africa. New findings from these trials are now becoming available, the implications of which, for population-based intervention programmes, need urgent consideration. A critical review of 18 randomized trials and other relevant studies from developing and industrialized countries. Most African results relate to trials of antiretroviral agents (ARV). They demonstrate efficacy in reducing transmission in the first 6 months of life with short regimens of zidovudine (ZDV), with or without lamivudine (3TC), and nevirapine (NVP) alone. Preliminary results suggest the long-term efficacy of zidovudine. Antiseptic and nutritional interventions have been shown to reduce maternal and infant mortality and morbidity but not MTCT of HIV. HIV confidential voluntary counselling and testing for pregnant women, a short regimen of peripartum ARV with alternatives to breastfeeding such as early weaning or breast milk substitutes from birth currently represent the best option to reduce MTCT of HIV in Africa. However, the prevention of postnatal transmission requires further research, particularly in view of the consequences of different feeding options and the possibility of post-perinatal exposure prophylaxis of newborns with ARV. Issues relating to the implementation of currently validated strategies are discussed.

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