The objective of this report is to provide countries with advice on what social determinant and risk factor variables to collect and what definitions to use, and to propose information to be collected at the national and European level.

The content of this joint guidance was developed by the European Centre for Disease Prevention and Control (ECDC) and the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) with the support of a technical advisory group composed of policy makers, service providers, civil society representatives and preventative health experts from throughout the EU/EEA.

This evidence-based guidance is designed to inform the development, monitoring and evaluation of national strategies and programmes in countries in Europe in order to reduce and prevent infections among people who inject drugs.