Abstract

Background Stimulants substances use, particularly methamphetamine use, is increasing globally, including in Iran. This study assessed the drug use and risk behaviour profile, and prevalence of HIV, hepatitis C virus (HCV), and hepatitis B virus (HBV) among a large population using methamphetamine as their primary drug in Iran. Methods: This cross-sectional study was conducted in eight provinces of Iran. Individuals using methamphetamine for >= 3 months during the past three years, with no life-time history of injecting opioid drugs were enrolled. Drug use and risk behaviour data were collected through interviews. Blood samples were tested for HIV antibodies (HIV Ab), HCV antibodies (HCV Ab), and HBV surface antigen (HBs Ag). Result: Among 567 participated, 84 were men and mean age was 36 years. Smoking with pipe was the most common method of methamphetamine use (53), while 13 had a history of injecting methamphetamine, among whom 30 shared needles or syringes. Among those having sex during intoxication phase (n = 270), 48 never used condom. The prevalence of HIV Ab, HCV Ab and HBs Ag was 6.7 (95CI: 4.7-9.1), 19.4 (95CI: 16.2-22.9) and 1.4 (95CI: 0.6-2.7), respectively. Age >= 30 years (adjusted OR aOR: 2.10, 95%CI: 1.18-3.76), lower education (high school vs. tertiary education, aOR: 13.95, 95%CI: 1.90-102.60), and injecting methamphetamine (aOR: 1.92, 95%CI 1.10-3.35) were significantly associated with HCV exposure. No factor was found associated with HIV infection. Among those reporting no potential injecting or sexual risk factors, 19.8% and 6.8% have HCV Ab positive and HIV Ab positive, respectively. Conclusion: High prevalence of injecting and sexual risk behaviours, HIV infection and HCV exposure were found among individuals using methamphetamine as their primary drug, demonstrating them as an emerging population at risk of HIV and HCV in Iran. Targeted screening and harm reduction programs for this population are required.