HIV infection among persons who inject drugs: ending old epidemics and addressing new outbreaks.

Des Jarlais et al. [1] highlight how HIV transmission among persons who inject drugs (PWID) has decreased considerably since the implementation of harmreduction policies. They provide a stimulating reflection on how to end old HIV epidemics and address new outbreaks in PWID [1]. Focusing on New York, Vancouver and France, their analysis shows how localized epidemics can still spread, even in countries where HIV seroprevalence has noticeably declined. However, some of the French data used are not suitable to reliably document the epidemic’s current dynamic, and more recent data are available.