2015–Present — The Linkages across the Continuum of HIV Services for Key Populations Affected by HIV (LINKAGES) project conducts a range of HIV prevention activities to reduce HIV transmission among key populations (sex workers, men who have sex with men, transgender persons and people who inject drugs) and to improve their enrollment and retention in care. The project provides a quarterly compilation of article abstracts from peer-reviewed literature on HIV and key populations in Africa, Asia and Pacific, Eastern Europe, Latin America, the Caribbean, and the Middle East. Abstracts are grouped by type of key population.