Eighty-eight percent of participants had reported being tested for HIV a median of six months prior to interview (range <1–144). Of these, seven (2% of the total sample) reported being HIV positive. One-hundred and forty-seven participants (37%) reported having been vaccinated against hepatitis B. There were no differences between those who reported being vaccinated against hepatitis B and those who had not in terms of age at first heroin injection, initial route of administration and initiating some one else to injecting in the preceding 12 months.
