"In the period 1995–2008, a considerable increase in hepatitis B among drug users nationwide was reported to MSIS. In 2013, four of a total of 30 reported cases of acute hepatitis B involved injecting drug users. During the period 1995–2013, the total number of reported cases of acute hepatitis B infection among injecting drug users was 1,980. Hepatitis B vaccination has been offered free of charge to injecting drug users since the mid-1980s."
Source
Drug Situation in Norway 2014, Norwegian Institute for Alcohol and Drug Research (SIRUS)/EMCDDA. Statistics 2015. ISBN: 978-82-7171-422-2. Available at www.fhi.no/en
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