High Number of Opioid Overdoses – July 3rd, 2021

Windsor-Essex County

Date/Time/Approximate Location

June 23rd, 2021

Primarily concentrated in the N9A postal code


Event Description

The Windsor-Essex County Health Unit’s surveillance and monitoring system has identified an increase in substance use-related Emergency Department (ED) visits and Emergency Medical Service (EMS) calls inclusively between June 14th and June 20th of 2021. Over this consecutive seven-day period, there were 30 substance use-related ED visits flagged by the system, and a total of 19 EMS Overdose Notifications were received.

These numbers do not meet our standard thresholds for an alert; however, this alert is being issued because there has been a significant increase in the number of fentanyl-related ED visits during this time period, including seven (7) fentanyl overdoses and twelve (12) non-overdoses.

Partners involved in the WECOSS, including the WECHU, Windsor Regional Hospital, Essex Windsor-EMS, Erie Shores Healthcare, and Police Services, continue to monitor this increase and are working to understand more about these reported cases.


Please share this information with clients and relevant partners. If you are aware of any linkages between these cases or other causes for these increases, please contact the Windsor-Essex County Health Unit.

For signs & symptoms of opioid overdose and what to do, visit the WECOSS website: How Can Overdose Be Prevented?


WECHU (Acute Care Enhanced Surveillance Application - ACES), Essex-Windsor EMS Overdose Notification System, Windsor Police Services