Increasing trends and incidence of nonfatal overdose among women sex workers who use drugs in British Columbia: The role of criminalization-related barriers to harm reduction

•There was a high incidence of nonfatal overdose among sex workers who use drugs.•Time series analysis shows significant increasing trend in first nonfatal overdose.•Criminalization-related barriers to harm reduction strongly predicted overdose.•Structural changes to legal and policing practices are urgently needed.