The study showed that the total health spending, disaggregated by source into government spending, out-of-pocket, prepaid private and development assistance for health was $562.6 billion over the 16-year period.
While the annual spending peaked in 2013 with $49.7 billion, in 2015, $48.9 billion was provided for the care, treatment and prevention of the disease.
Governments were the largest source of spending on HIV/AIDS in 2015, contributing $29.8 billion or 61 per cent of total spending on HIV/AIDS.
Conversely, prepaid private spending was the smallest, making up only $1.4 billion of the 2015 total.
"This research is an important initial step toward global disease-specific resource tracking, which makes new, policy-relevant analyses possible, including understanding the drivers of health spending growth," said Christopher Murray, Director of the Institute for Health Metrics and Evaluation (IHME) at the University of Washington-Seattle.
"We are quantifying spending gaps and evaluating the impact of expenditures."
Development assistance for health (DAH), funding from high-income nations to support health efforts in lower-income ones, made up 0.5 per cent of total health spending globally in 2015; DAH totalled 30 per cent of all HIV/AIDS spending in 2015.
"Reliance on development assistance to fight HIV/AIDS in high-prevalence countries leaves them susceptible to fluctuations in the external resources available for HIV/AIDS," said Joseph Dieleman, from the IHME.
"Nations' HIV/AIDS programmes are at risk for gaps in support and unrealised investment opportunities."
For the study, the team worked with a group of 256 researchers in 63 countries.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
