This ‘comprehensive package” is from the 2012 edition of the WHO, UNODC, UNAIDS Technical Guide for Countries to Set Targets for Universal Access to HIV Prevention, Treatment and Care for Injecting Drug Users. For the purposes of this workshop, harm reduction is defined by these interventions however also adapts further features from the subsequent WHO. Consolidated Guidelines on HIV prevention, Diagnosis, Treatment and Care for Key Populations 2014, to also highlight the importance of sexual and reproductive health, psychosocial services and overdose prevention and management