HIV in Three Groups of Young People from Medellín: General Population, Organizations for People with Socioeconomic Vulnerability, and Men Who Have Sex with Other Men.

HIV prevalence was high, and explained by socioeconomic vulnerability, having sex between men, gender, age, education, and health affiliation, demonstrating the intersectionality of determinants of the health system, socioeconomic status, and determinants individuals in the occurrence of HIV in young people in Medellín.