"It was not okay because you leave your friends behind": A prospective analysis of transition to adult care for adolescents living with perinatally-acquired HIV in South Africa.

Improved preparation for transition by pediatric and adult clinical staff, including restructuring of care delivery, may improve successful transition of adolescents living with perinatally acquired HIV to adult care. Transition readiness assessments are needed to determine optimal timing of transition and which adolescents are ready to transition to adult care.