1) Engagement in HIV care ranges from fully engaged patients who regularly attend medical visits to non-engagers who are unaware of their HIV status or never enter into care. 2) Missing medical visits for HIV care can negatively impact health outcomes like increased viral load and drug resistance, and has been associated with higher mortality. 3) Strategies that have been shown to improve retention in HIV care include outreach programs, case management, addressing practical barriers, and strengthening the patient-provider relationship.