This collection of models of good practice of interventions to improve community-based testing, increase linkage to care and adherence to treatment for hepatitis B and C, HIV and tuberculosis and for health promotion interventions to prevent infections among people who inject drugs was conducted as part of the update of the joint European Centre for Disease Prevention and Control (ECDC) and European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) guidance, ‘Prevention and control of infectious diseases among people who inject drugs’ (published in 2011). The purpose of this collection is to identify practice-based evidence for interventions with a documented impact implemented in real-life settings. This document is part of the package of technical documents published to accompany the joint 2023 ECDC and EMCDDA update of the guidance ‘Prevention and control of infectious diseases among people who inject drugs.’