Established in 1993, the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) is an EU agency which collects and disseminates comparable evidence-based data on drugs and drug addiction in Europe. This publication is the seventh in the series of scientific monographs and contains papers on the topic of hepatitis C and injecting drug users. It is divided into four parts dealing with: natural history, treatment, quality of life, epidemiology and prevention issues; models of hepatitis C infection, injecting drug use and policy options; healthcare costs and wider costs of drug use; cost-effectiveness of needle and syringe programmes and methadone maintenance.