FDA Warns of U.S. Norovirus Cases Linked to Canadian Oysters

TUESDAY, April 5, 2022 (HealthDay News) -- The United States and Canada are investigating a multistate outbreak of norovirus illnesses linked to raw oysters from Canada.

Restaurants and retailers should not serve or sell these potentially contaminated raw oysters, which were harvested in the south and central parts of Baynes Sound, British Columbia, Canada, the U.S. Food and Drug Administration said.

The oysters were distributed in 13 states, but others may also have received them through further distribution within the United States, the FDA said. States confirmed to have received the tainted oysters are California, Colorado, Florida, Hawaii, Illinois, Massachusetts, Minnesota, New Jersey, New York, Nevada, Oregon, Texas, and Washington. The FDA and the states conducted what is known as a "trace forward investigation" to determine where the raw oysters were distributed and remove them from the food supply.

While food contaminated with norovirus may look, smell, and taste normal, it can cause diarrhea, vomiting, nausea, stomach pain, fever, headache, and body ache within 12 to 48 hours after being eaten. Most people get better within one to three days. Children younger than 5 years, older adults, and people with weakened immune systems are more likely to have severe infections. The symptoms can lead to dehydration, especially in children, older adults, and people with other illnesses.

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