This document proposes using DHIS 2 Tracker to track mother-infant pairs across PMTCT services in order to reduce loss to follow up. Currently, high rates of loss to follow up occur when women do not complete preventive treatment or infants do not receive necessary testing. The DHIS 2 Tracker could track progress through the PMTCT cascade regardless of service location, track referrals, and link mother and infant data to improve infant monitoring. It would generate appointments, mark their completion, and issue alerts for missed appointments. This would allow programs to better monitor the PMTCT cascade and improve outcomes.