AimsWe measured the association between a history of incarceration and HIV positivity among people who inject drugs (PWID) across Europe. Design, Setting and ParticipantsThis was a cross-sectional, multi-site, multi-year propensity-score matched analysis conducted in Europe. Participants comprised community-recruited PWID who reported a recent injection (within the last 12 months). MeasurementsData on incarcera...