Age shift in patterns of injection drug use among the HIV/AIDS population in Miami-Dade County, Florida.

Analysis of HIV exposure category for 20,034 persons in three age groups (13-29, 30-49, 50 and over) who were alive through 2003 and had been reported to the Florida Department of Health with HIV or AIDS in Miami-Dade County, Florida, found that having a history of injection drug use increases with increasing age (p < .001). Consideration of age-specific HIV risk profiles has implications for primary and secondary HIV prevention interventions, planning, and policy.