• L Kuhn, R Bobat, A Coutsoudis, D Moodley, H M Coovadia, W Y Tsai, and Z A Stein.
• Division of Epidemiology, Columbia University, New York, NY 10032, USA.
• J. Acquir. Immune Defic. Syndr. Hum. Retrovirol. 1996 Apr 15; 11 (5): 478-83.

AbstractData from a prospective study undertaken at an urban hospital in Durban, South Africa, were used to investigate associations between maternal-infant HIV transmission, mode of delivery, and specific circumstances of cesarean deliveries. A total of 141 children of HIV-infected women were followed until the children were 15 months of age to determine their HIV status. supplementary data were collected from obstetric records, masked to the HIV status of the children. In this African and predominantly breast-fed population, infants delivered vaginally were more likely to be infected (39.8% infected) than were infants delivered by cesarean section [22.9% infected; odds ratio (OR), 0.45; 95% confidence interval (CI), 0.20-0.99]. There were no significant differences between cesarean deliveries undertaken following prior rupture of membranes and those undertaken with membranes intact, but numbers for this comparison were small. Singleton cesarean deliveries without concurrent obstetric complications had lower rates of transmission than did vaginal deliveries (OR, 0.20; 95% CI, 0.04-0.94). These results suggest that certain intrapartum events may modify the risk of HIV transmission and highlight the importance of collecting more detailed intrapartum information in order to clarify the route by which mode of delivery may be associated with maternal-infant HIV transmission.

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