Rapid Change in Fentanyl Prevalence in a Community-Based, High-Risk Sample

Jones et al cite that planning for the implications of nonprescribed fentanyl use relies on multisource forensic, or clinical samples. Complementing these descriptions, they report a prospective longitudinal study of change in urine fentanyl prevalence in a high-risk, community-based sample. Directly assessed participants were from a health outcomes study of people living in an impoverished neighborhood of Vancouver, Canada. Overall overdose deaths and first responder calls were obtained from the British Columbia Coroner's Office and Vancouver Police and Fire statistics for the study period (March 1 to July 31, 2017).