HIV prevalence and risk behaviour among intravenous drug users attending HIV counselling and testing centres in Paris.

This study was designed to analyse sexual and drug use behaviour, to determine whether increased awareness can lead to behaviour change, and to evaluate the association between HIV seropositivity and potential risk factors. A 4-month survey was carried out on 147 IVDUs attending three HIV counselling and testing centres, 98% of whom had been using heroin for an average of 7 years, 85% in association with other drugs. Two-thirds of injectors reported having used "safer" injecting practices in the previous year. Most of the IVDUs were heterosexual, and had had an average of three sexual partners in the previous year. More than half of them had had high risk partners. Condoms were used by only 25% of IVDUs, and were more likely to be used with seropositive partners (38% versus 12.7%, p = 0.02). Patients considering themselves to be well informed about HIV transmission shared syringes significantly less often, but had the same sexual behaviour patterns as other subjects. The HIV prevalence rate (8.2%) in our sample was not statistically related to any risk factor apart from drug use duration, the latter possibly reflecting a cumulative exposure to HIV risks. Since sexual risk appears to be a potential long-term hazard for IVDUs, it is important that more attention be paid to providing counselling to specifically address this issue.