Conclusions
SECONDARY
This evaluation of an adjustment to clinic-based services provided by Mentor Mothers did not improve the main and secondary study outcomes based on proportion of days covered with medications for mothers and coverage of infant HIV testing. With better coverage of viral load status for women on ART presenting for prenatal care, PMTCT services can be targeted specifically to three primary and fundamentally different subsets of women presenting for prenatal care: (1) on ART and virally suppressed, which is likely to be a relatively large share of the total; (2) on ART but not suppressed (likely to be a small share); and (3) not on ART when presenting, which in effect includes those never on treatment and those previously on treatment (which may or may not be ascertained). These three subsets, and documentation of services received, will also support investigations into the health and development outcomes of HIV-exposed but uninfected infants [