“…Given the high levels of risk behaviour among HIV-positive IDUs aware of their serostatus, HIV testing should be followed by counselling in combination with other interventions directed at fostering long-term behavioural change (Crepaz et al, 2006;Rhodes, Singer, Bourgois, Friedman, & Strathdee, 2005;Marks, Burris, & Peterman, 1999). This is especially important in situations where a variety of social and environmental factors interplay to produce or sustain risk (Rhodes, & Simic, 2005).…”