The primary outcomes from Aim 1 are final scripts and pass/fail scores for use in SP encounters. The primary outcome for the randomized controlled trial (RCT) (Aim 2) is retention in care among HIV-positive adolescents and youth, based on electronic medical records data. Secondary outcomes will include satisfaction (patients and HCWs), HCW competency in youth- friendly counseling, antiretroviral therapy adherence, and viral suppression. For the cost effectiveness and cost utility analyses (Aim 3), the cost per additional HIV-infected adolescent/youth retained in care and the cost per additional life year saved and disability-adjusted life averted will be estimated.