“…Main affected populations in the MENA are people who inject drugs (PWID), men who have sex with men (MSM), female sex workers (FSWs), and their sexual and injecting partners. 1,2,4 In such concentrated epidemics, the estimates of HIV prevalence relies on the prevalence of HIV in each key at-risk population and the size of low- and high-risk populations. In the MENA region, however, data on HIV prevalence among key populations is unavailable in several low- and high-income countries (eg, Bahrain, Iraq, Kuwait, Libya, Oman, Qatar, Saudi Arabia, South Sudan, Syria, and the UAE).…”