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Supervised Injecting (SEOSI)

SEOSI – the Scientific Evaluation of Supervised Injecting – is a cohort study that began in 2003. SEOSI participants have been randomly recruited from Insite, Vancouver's supervised injection facility, and form a representative sample of all Insite clients. Like other UHRI cohorts, SEOSI is a longitudinal study, meaning that it is made up of individuals who represent a larger specific population and who are tracked over time. After informed consent is obtained, each participant provides a blood sample and completes an interviewer-administered questionnaire. Participants return every six months for a follow-up interview and blood testing. The information collected through SEOSI relates primarily to the use of Insite and how the facility affects drug use practices such as syringe sharing, public drug use and other factors in participants' lives that may compromise their health.