Figure 3From: Long term outcomes of antiretroviral therapy in a large HIV/AIDS care clinic in urban South Africa: a prospective cohort studyKaplan-Meier estimates of viral rebound among patients with initial viral suppression. Initial virologic success is defined as viral load ≤ 400 copies/ml within six months of HAART initiation. Viral rebound is defined as two consecutive (or one if no additional measurement was available) viral load measurements greater than 400 copies/ml, or one viral load greater than 5000 among patients with initial virologic success.Back to article page