- EuroSIDA: A prospective observational cohort study of HIV-positive individuals in Europe, Israel and Argentina
- HIV Indicator Diseases across Europe Study (HIDES)
- Partners of people on ART - a New Evaluation of the Risks (The PARTNER study)
- RESPOND: The International Cohort Consortium of Infectious Disease
- TB:HIV - Tuberculosis among HIV-positive Patients: An International Prospective Observational Cohort Study