SuperMIX: The Melbourne Injecting Drug User Cohort Study

SuperMIX is a cohort of people who inject drugs (PWID) that has been running in various forms at the Burnet Institute since 2008. The original cohort of 688 was recruited between 2008 and 2010 with an additional 69 participants added to the cohort in 2011, making MIX/SuperMIX the largest cohort study of PWID ever conducted in Australia.

In 2017 we will recruit additional participants to bring the overall cohort size up to around 1000 and we continue to follow these people through to the end of 2021.

SuperMIX will provide important information about how injecting drug use evolves over time, focused on periods during which cohort members cease injecting drug use and if they subsequently relapse and the drivers of this cessation and relapse.

This information is crucial for designing services and interventions for promoting long-term cessation from, and preventing subsequent relapse into, injecting drug use.







  • Matthew Hickman, University of Bristol
  • Thomas Kerr, BC Centre of Excellence in HIV/AIDS
  • Lisa Maher, Kirby Institute
  • Jenny Kelsall, Harm Reduction Victoria
  • Andrew Forbes, School of Public Health and Preventive Medicine, Monash University


  • Colonial Foundation Trust
  • National Health and Medical Research Council (545891, 1126090)

Contact Details

For any general enquiries relating to this project, please contact:

Professor Paul Dietze

Program Director, Behaviours and Health Risks