Michelle Firestone

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BACKGROUND Previous research has identified the impact of law enforcement practices on the behaviours and health of injection drug users (IDUs). We undertook a qualitative study of IDUs' experiences of policing practices in two Mexican cities on the U.S. border. METHODS In 2004, two teams of Mexican interviewers conducted in-depth interviews with IDUs(More)
Consultations with community-based service providers in Toronto identified a lack of strong research evidence about successful community-based interventions that address the needs of homeless clients experiencing concurrent mental health and substance use disorders. We undertook a collaborative research effort between academic-based and community-based(More)
BACKGROUND There is evidence of a high prevalence of prescription opioid (PO) and crack use among street drug users in Toronto. The purpose of this qualitative study was to describe drug use behaviours and preferences as well as the social and environmental context surrounding the use of these drugs among young and old street-based drug injection drug users(More)
OBJECTIVES Mental health and substance use have been identified as health priorities currently facing Indigenous peoples in Canada; however, accessible and culturally relevant population health data for this group are almost non-existent. The aim of the Our Health Counts study was to generate First Nations adult population health data in partnership with(More)
Sex workers and their clients are particularly vulnerable to HIV/STI transmission. Most research on condom use has focused on barriers preventing use; less is known about attitudes, motivations and strategies employed by those who feel positively about condoms and who use them successfully. For this qualitative study, we conducted focus group discussions(More)
Prescription opioids (POs) are playing an increasingly central role in street drug use and related harms in North America. One distinct PO substance of interest is Fentanyl (Duragesic), a potent opioid analgesic designed for transdermal time-release application. Studies from Europe and North America have documented the sizeable overdose and mortality burden(More)
OBJECTIVE Population-based health information on urban Aboriginal populations in Canada is limited due to challenges with the identification of Aboriginal persons in existing health data sets. The main objective of the Our Health Counts (OHC) project was to work in partnership with Aboriginal stakeholders to generate a culturally relevant, representative(More)
We explored intraurban mobility of Tijuana, Mexico, injection drug users (IDUs). In 2005, 222 IDUs underwent behavioral surveys and infectious disease testing. Participants resided in 58 neighborhoods, but regularly injected in 30. From logistic regression, "mobile" IDUs (injecting ≥3 km from their residence) were more likely to cross the Mexico/U.S.(More)
Despite the development of numerous national exposure-related databases, exposure assessment remains a weak link in the chain of risk assessment and risk-management activities. Most databases include measures of environmental releases or concentrations of pollutants in specific media, but do not include actual measures of exposure. If accurate estimates of(More)