Standard care (SC) and intervention (INT) arm procedures
﻿Study enrollment began in 2017, and all study sites provided PMTCT services based on Kenyan guidelines, which included continuation of ART for those already on treatment and immediate eligibility for ART (once-a-day, fixed-dose combination of tenofovir, lamivudine, and efavarivnz) for those not yet on ART, along with additional services outlined in national treatment guidelines [As additional support, beginning in 2012, peer-counselors called Mentor Mothers were integrated into MCH clinics providing PMTCT [The six clinics randomized to the intervention arm continued to provide PMTCT services based on Kenya guidelines, but with two main revisions to the services provided by Mentor Mothers (and see [