A population estimation study was performed in 2009-2010 to understand the apparent decrease in people who inject drugs (PWID) attending needle syringe programs (NSPs) and to calculate the number of PWID in Bali for service planning.
In 2010 the international HIV/AIDS community called on countries to take action to prevent HIV transmission among people who inject drugs (PWID). To set a baseline we proposed an "accountability matrix", focusing upon six countries accounting for half of the global population of PWID: China, Malaysia, Russia, Ukraine, Vietnam and the USA. Two years on, we review progress.