HIV infection and risk, prevention, and testing behaviors among injecting drug users -- National HIV Behavioral Surveillance System, 20 U.S. cities, 2009.

At the end of 2009, an estimated 1,148,200 persons aged ≥13 years were living with human immunodeficiency virus (HIV) infection in the United States. Despite the recent decreases in HIV infection attributed to injection drug use, 8% of new HIV infections in 2010 occurred among injecting drug users (IDUs).June-December 2009.The National HIV Behavioral Surveillance System (NHBS) collects HIV prevalence and risk behavior data in selected...