Since 2010, the annual global number of new HIV infections among adults (15 years and older) has remained static, at an estimated 1.9 million. Members of key populations, including sex workers, people who inject drugs, transgender people, prisoners and gay men and other men who have sex with men, and their sexual partners accounted for 45% of all new HIV infections in 2015.
In some countries and regions, infection rates among key populations are extremely high—HIV prevalence among sex workers varies between 50% and 70% in several countries in southern Africa. One study from Zimbabwe found HIV prevalence rates of 27% for male inmates, 39% for female inmates and 60% for sex workers, with 9.6% of these getting newly infected between 2009-2014. New infections among gay men and other men who have sex with men have been increasing in all regions in recent years. Across countries, key populations are between 10 and 50 times in greater risk of HIV infection compared to other adults.
Criminalization and stigmatization of same-sex relationships, sex work and drug possession and use, and discrimination, including in the health sector, are preventing key populations from accessing HIV prevention services. Effective government support and community-based and implemented HIV prevention and treatment programmes that provide tailored services for each group are currently too few and too small to result in a significant reduction in new infections.
In order to achieve the target of reducing new HIV infections among key populations by 75% by 2020, a large-scale increase of programmes and the creation of an enabling social and legal environment are needed.
