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Assess the preliminary impact of Brave Technology Co-op's overdose detection devices that have been implemented in housing, medical, social service facilities, and several private settings in North America. Administrative data was collected by Brave on their Buttons and Sensors during several proof-of-concept projects and full installations in Canada and United States (US) between December 2018 and July 2022. Data analyzed provided insights on the number of overdoses detected and reversed (averted overdose deaths) using Brave Sensors and Buttons, along with other programmatic and session-specific indicators. Implementation of 486 Brave Buttons and 148 Brave Sensors in Canada has detected and prevented 108 overdose deaths (100 using Buttons and 8 using Sensors) whereas implementation of 170 Buttons in the US has averted 2 overdose deaths to date, with the potential to save many more lives. Brave's devices hold promise for increasing rates of overdose detection and preventing overdose deaths. [ABSTRACT FROM AUTHOR]

Globally, HIV prevention interventions have proven efficacious among street-based female sex workers (FSWs); yet, there is a dearth of US-based HIV prevention research among this group. The lack of research among FSWs in the USA is partially driven by challenges in recruiting members of this population. The purpose of this research is to describe how targeted sampling was employed to recruit a cohort of street-based FSWs for a study that examined the role of police in shaping the HIV risk environments of street-based FSWs in Baltimore, MD. Our research demonstrates that targeted sampling can be an advantageous strategy for recruiting hidden populations that are mobile and geographically dispersed. [ABSTRACT FROM AUTHOR]