UNAIDS commissioned this report to investigate programmes and sites in low-income and transitional countries which were regarded by international authorities as ‘high coverage sites’ – that is, where more than 50% of injecting drug users had been reached by one or more
HIV-prevention interventions. The most significant finding is that high level coverage can be attained by interventions addressing HIV among injecting drug users in developing and transitional countries. The seven case studies each include a description of the development of the programme and features of the services provided, an estimation of programme coverage, factors that enabled high coverage, and a discussion of ways to maintain and expand coverage.