This project provides comprehensive, community-based HIV Prevention, Linkage and Retention Services for Key Populations and Adolescent Girls and Young Women in eight regions across Tanzania including Dar es Salaam, Pwani, Mwanza, Mara, Simiyu, Kigoma, Kagera and Geita. The goal of the project is to accelerate, expand, and improve the quality of comprehensive community-based HIV prevention services to key and vulnerable populations (KVP) and priority populations (PP) to achieve epidemic control. KVP include groups with elevated behavioral risk for HIV, comprising female sex workers (FSW), people who inject drugs (PWID), and men who have sex with men (MSM). Priority populations include vulnerable adolescent girls and young women (AGYW) aged 15 to 29 years. ICAP is collaborating with the Government of Tanzania at national, regional, district and community levels and collaborates with HIV stakeholders including implementing partners, healthcare providers and community volunteers to deliver services to intended beneficiaries.