According to a large and growing body of research, housing status has a direct, independent, and powerful impact on HIV incidence and on the health of people living with HIV/AIDS. Homelessness and unstable housing are consistently linked to greater HIV risk, inadequate HIV health care, poor health outcomes and early death. In fact, housing status is a stronger predictor of HIV health outcomes than demographics, mental health, substance use, or use of other services. Whatever factor makes someone vulnerable to HIV infection - homelessness magnifies the risk. Whatever factors lead to disparities in care - for women, for youth, for sexual minorities, for epople of color, for those who experience mental illness, addiction violence, abuse or incarceration - housing instability ampligies these disparities in tragic and avoidable ways.