Audit of bloodborne virus infections in injecting drug users in general practice.

HBV infection was found in 31 of 71 tested in 1998 (44%) and 40 of 99 tested at follow up (40%). In 1998 54 out of the 75 tested for hepatitis C antibodies (72%) were positive compared with 73 out of 108 (68%) at follow up. Twenty-six of the 80 tested for HIV antibodies were positive in 1998 (33%) and 26 of 105 at follow up (25%). Large numbers of injecting drug users in our study were found to be not immune to hepatitis B and required immunisation. An abbreviated protocol for immunisation was devised, including post vaccination checks and boosting as necessary. Hepatitis C testing was requested after counselling in most cases, resulting in important and positive interventions. Prevention opportunities for all three bloodborne viruses were identified. Commun Dis Public Health 2000; 3: 244-6.