Transition from paediatric to adult HIV services should be a planned multifaceted process designed to maintain engagement in care, facilitate adolescent health autonomy, maximise adolescent and family satisfaction, and optimise health outcomes. The model of transition will be determined by the availability of services, but should at least involve an integrated process incorporating adolescent and adult HIV health care providers that respects the maturity of the adolescent undergoing transition. This can be conceptualised and prepared in paediatric health services, followed by a period of conjoint care (across paediatric and adult health services) and then ongoing care in adult health services. https://www.racp.edu.au//docs/default-source/advocacy-library/transition-of-young-people-with-complex-and-chronic-disability-needs.pdf?sfvrsn=29aa2f1a_16
A useful list of key areas to consider when transitioning adolescents with HIV infection to adult services is available at https://aidsinfo.nih.gov/guidelines/html/2/pediatric-arv/78/specific-issues-in-antiretroviral-therapy-for-adolescents-living-with-hiv-infection.