Figure 2: Investigation and Recall Response to Listeriosis Outbreak
This image highlights key events in the investigation and recall response to the listeriosis outbreak.
From July 21 to August 20
- Toronto Public Health (TPH) collects samples from nursing home/sent to Listeriosis Reference Service Laboratory and positive result received on
August 5
- Mid-August PHAC takes epidemiological lead
August 6 - 23
- August 6, TPH notifies CFIA
- August 7 to 23, CFIA initiates and carries out Food Safety Investigation to determine source of outbreak
August 16 to October 17
- Series of risk assessments
- First risk assessment conducted by CFIA
- Remaining risk assessments conducted by HC
August 17 to 29
- First of series of 24 recalls. 192 Maple Leaf Food products recalled (in addition to secondary recalled products)
August 20 to September 15
- Approximately 29,000 recall effectives checks completed
August 19 to October 20
- Follow-up activities initiated and carried out