National estimates and risk factors associated with early mother-to-child transmission of HIV after implementation of option B+: a cross-sectional analysis

by Beth A Tippett Barr et al

Malawi's Ministry of Health led the National Evaluation of Malawi's PMTCT Program to obtain nationally representative data on maternal ART coverage and prevention of mother-to-child transmission (MTCT) effectiveness. This paper presents the early transmission data for infants aged 4–12 weeks. In multivariable logistic regression analysis, the odds of early MTCT were higher in mothers starting ART post partum (adjusted odds ratio 16·7, 95% CI 1·6–171·5; p=0·022) and in those not on ART with an unknown HIV status during pregnancy (19·1, 8·5–43·0; p<0·0001) than in mothers on ART before pregnancy. Among HIV-exposed infants, 98·0% (95% CI 96·9–99·1) were reported by the mother to have received infant nevirapine prophylaxis, and only 45·6% (34·8–56·4) were already enrolled in an exposed infant HIV care clinic at the time of study screening. These data suggest that Malawi's decentralisation of ART services has resulted in higher ART coverage and lower early MTCT. However, the uptake of services for HIV-exposed infants remains suboptimal.

4th December 2018 • comment