Treatment of trichomoniasis in pregnancy in sub-Saharan Africa does not appear to be associated with low birth weight or preterm birth.

OBJECTIVES To determine whether treatment of trichomoniasis increases the risk of prematurity. DESIGN Sub-analysis of a randomised trial. SETTING We analysed data from HPTN trial of antenatal and intrapartum antibiotics to reduce chorioamnionitis-related perinatal HIV transmission. SUBJECTS Pregnant women from four sites in Africa. OUTCOME MEASURES Gestational age at the time of delivery or mean birth weight. RESULTS Of 2,428 women-infant pairs included, 428 (18%) had trichomoniasis at enrolment. There were no differences in infant age or birth weight between women with or without trichomoniasis. By randomisation group, there were no differences in gestational age at birth or birth weight. Of the 428 women diagnosed with trichomoniasis, 365 (83%) received antibiotics and 63 (15%) did not. In analysis of actual use of antibiotics, women with trichomoniasis who received no treatment were more likely to deliver a preterm infant when the symphysis-fundal height was used to estimate gestational age (36% v. 23%; p=0.03), but not when the Ballard score was used (16% v. 21%; p=0.41). There were no differences in mean birth weight between groups. CONCLUSIONS In pregnant women in sub-Saharan Africa, most of whom were HIV-infected, neither trichomoniasis nor its treatment appears to influence the risk of preterm birth or a low-birth-weight infant.