Global systematic review and ecological analysis of HIV in people who inject drugs: National population sizes and factors associated with HIV prevalence

People who inject drugs (PWID) are at elevated risk of HIV infection. Data on population sizes of PWID living with HIV are needed to inform the implementation of prevention, treatment and care programs. We estimated national population sizes of people who recently (past 12 months) injected drugs living with HIV and evaluated ecological associations with HIV prevalence in PWID.We used national data on the prevalence of injecting drug use and of...