"The incidence of HIV among injecting drug users has remained at a stable, low level for many years, with about 10 to 15 cases reported per year. The reason for this is not entirely clear, but a high level of testing, great openness regarding HIV status within the drug user community, combined with a strong fear of being infected and strong internal justice in the milieu, are assumed to be important factors. In addition, many of the sources of infection in the milieu have disappeared due to overdose deaths, and some have been rehabilitated through substitution therapy or other forms of rehabilitation. However, the extensive outbreaks of hepatitis A and B in the late 1990s and early 2000s, and the high incidence of hepatitis C, show that there is still extensive needle sharing in this group, although a large number of syringes are handed out every year in Norway."

Source

Norwegian Institute for Alcohol and Drug Research, "The Drug Situation in Norway 2012: annual report to the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA)," (Oslo, Norway: December 2012), p. 32.
http://www.emcdda.europa.eu/s…