The Canadian Food Inspection Agency has issued a recall for certain Taylor Shellfish Canada oysters, including Fanny Bay, Sunseeker, and Cloudy Bay varieties, distributed in British Columbia, Alberta, and Ontario due to potential norovirus contamination. Consumers are advised to discard or return these products and seek medical attention if they experience symptoms such as vomiting, diarrhea, nausea, and stomach cramps, which can appear within 12 hours. While most individuals recover in a few days, severe cases may require hospitalization.