Option B+ for prevention of mother-to-child transmission (PMTCT) of HIV has been adopted across sub-Saharan Africa, but high rates of loss to follow-up (LTF) indicate that, while coverage of antiretroviral therapy (ART) has increased, maternal and infant retention in care is low. However, the National Institutes of Health-funded Safe Generations-Plus study led by ICAP at Columbia University investigated LTF cases at 10 health facilities in Swaziland and found that substantial proportions of both women and infants who had been marked as LTF were actually engaged in care. This gap in understanding, the study says, is caused by limitations in the capture and utilization of health facility data.

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