The Canadian Food Inspection Agency (CFIA) announced on July 8, 2026 that a paralytic biotoxin has been identified in mussels, clams and oysters harvested from portions of Quebec’s North Shore. The agency’s alert advises anyone with these shellfish to refrain from consumption until further notice and urges retailers to remove affected products from shelves.
The toxin, known to cause paralytic shellfish poisoning, was detected during routine testing of seafood collected from the region. While the specific concentration levels were not disclosed, the presence of the contaminant prompted the CFIA to issue an immediate public health warning. The agency’s mandate includes continuous monitoring of food safety across Canada, and the discovery underscores its role in safeguarding consumers from marine toxins.
Authorities on the North Shore have been cooperating with the CFIA to trace the source of the contaminated harvests. Harvesting operations in the affected areas are temporarily suspended while further investigations determine the extent of the biotoxin’s spread. The CFIA recommends that individuals who have purchased shellfish from local markets verify the origin of the product and follow any recall instructions that may be issued.
Paralytic shellfish poisoning can lead to symptoms ranging from tingling sensations to respiratory distress in severe cases. Health officials stress that prompt medical attention is essential for anyone experiencing such symptoms after consuming shellfish. The warning comes as part of the agency’s broader effort to maintain confidence in Canada’s seafood supply, which is regularly tested for a range of natural and man‑made contaminants.
Consumers are encouraged to stay informed through official CFIA communications and to seek alternative protein sources until the situation is resolved. The agency will continue to monitor the North Shore waters and update the public as new information becomes available.