Despite significant progress in combatting HIV, driven in large part by increased investments, the epidemic remains a global emergency and several challenges threaten future progress. One such challenge is an ongoing resource gap; UNAIDS estimates that although US$19.1 billion from both international and domestic sources was available to address HIV in low- and middle-income countries in 2016, US$26.2 billion will be needed annually by 2020 (to be gradually reduced by 9% by 2030) to meet global targets to end AIDS as a global publiche alth threat by 2030.
