(Prevalence of Injection Drug Use Worldwide) "The joint UNODC/WHO/UNAIDS/World Bank estimate for the number of people who inject drugs (PWID) for 2014 is 11.7 million (range: from 8.4 to 19.0 million), or 0.25 per cent (range: 0.18-0.40 per cent) of the population aged 15-64.
HIV/AIDS & Injection Drug Use
(Prevalence of Needle Sharing Among Young Adults Aged 21-30 in the US)
" The proportion of 21- to 30-year-olds who say they have ever shared needles in this way during their lifetime is 0.5% overall—0.5% of males and 0.4% of females (Table 1a). As noted in the next section, 1.6% of the full samples say they have ever injected a drug, so this indicates that a minority — but still nearly a third — of the people injecting any of the several drug classes mentioned in the question (heroin, cocaine, amphetamines, or steroids) shared a needle at some time.
(Prevalence of Injection Drug Use Among Young Adults Aged 21-30 in the US)
(Global Progress in Controlling HIV-AIDS Related to Injection Drug Use) "The world is not on track to reduce HIV transmission among people who inject drugs by 50%, as recent evidence suggests little change in the HIV burden in this population. HIV prevalence among people who inject drugs remains high – up to 28% in Asia. HIV prevention coverage for people who inject drugs remains low, with only two of 32 reporting countries providing the recommended minimum of at least 200 sterile syringes per year for each person who injects drugs.
(New HIV Infections Among Youths in the US, by Transmission Method) "In 2010, of the estimated 47,500 new HIV infections, 12,200 (25.7%) were among youths (10,100 [82.8%] among males and 2,100 [17.2%] among females). An estimated 7,000 (57.4%) newly infected youths were blacks/African Americans (5,600 males and 1,400 females), 2,390 (19.6%) were Hispanics/Latinos (2,100 males and 290 females), and 2,380 (19.5%) were whites (2,100 males and 280 females) (Figure 2).
(HIV Prevalence Among Youth) "In 2009, youths (defined in this report as persons aged 13–24 years), who represented 21% of the U.S. population, comprised 6.7% of persons living with HIV. More than half (59.5%) were unaware of their infection, the highest for any age group (1)."
(AIDS Diagnoses in the US, by Transmission Method and Gender) "From 2009 through 2013, the annual number of infections classified as stage 3 (AIDS) among adult and adolescent males with HIV infection attributed to male-to-male sexual contact, injection drug use, male-to-male sexual contact and injection drug use, or heterosexual contact decreased. The number of infections classified as stage 3 (AIDS) among adult and adolescent females with HIV infection attributed to injection drug use or heterosexual contact decreased."
(Trends in HIV Deaths in the US, by Transmission Method and Gender) "Sex and transmission category: From 2010 through 2014, the rates of deaths for male and female adults and adolescents decreased. The number of deaths among males with diagnosed HIV infection attributed to male-to-male sexual contact, to injection drug use, to male-to-male sexual contact and injection drug use, or to heterosexual contact decreased. The number of deaths among females with infection attributed to injection drug use or to heterosexual contact decreased.
(Global Estimated Prevalence of IDU-Related HIV, 2011) "Of the estimated 14.0 million (range: 11.2 million to 22.0 million) people who inject drugs worldwide, UNODC estimates that 1.6 million (range: 1.2 million to 3.9 million) are living with HIV. That represents a global prevalence of HIV of 11.5 per cent among people who inject drugs.15
(Prevalence of Diagnosed HIV Infection in the US by Method of Transmission) "Sex and transmission category: At year-end 2014, the rates were 555.3 for male adults and adolescents, 169.2 for female adults and adolescents, and 4.7 for children (aged less than 13 years at year-end 2014).