To study clinical and psychological characteristics associated with high-risk behaviour related to HIV infection in 2006-2007 years, we examined 68 patients with psychoactive drugs (with stimulating action) and opioids (heroin) dependencies. Patients were stratified into 2 groups: users of psychoactive drugs (UPS)--34 patients and opioid users (OU)--34. Behavior of UPS differed from that of OU by using more drug injections per day although the former used syringes of other users less often. Therefore, the risk of being infected was lower in the UPS group compared to the OU group. The evaluation of the risk through sexual transmission did not reveal significant between-group differences.
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