The U.S. Food and Drug Administration has issued a warning to restaurants, retailers and consumers about oysters harvested in Canada that may be contaminated with norovirus.

The oysters in question were harvested by Stellar Bay Shellfish of British Columbia, Canada, on Dec. 30, 2025; Jan. 20, 2026; Jan. 26, 2026; and Jan. 29, 2026. They came from harvest area BC 17-20 (Nanoose Bay) CLF 1401656.

They were sold with the brand names Kusshi, Chrome Point, Stellar Bay or Stellar Bay Gold.

The oysters were distributed to restaurants and food retailers in Pennsylvania as well as California, Colorado, Florida, Hawaii, Illinois, Maryland, Nevada, New York and Washington.

The FDA said the oysters should not be eaten and should be thrown away.

Oysters contaminated with norovirus can cause illness if eaten, and potentially severe illness in people with compromised immune systems.

Food containing norovirus may look, smell and taste normal. Consumers experiencing symptoms should contact their health care provider and report their symptoms to their local health department.

Diarrhea, abdominal cramps, nausea, vomiting and fever may be associated with gastroenteritis infections caused by norovirus.

A person usually develops symptoms 12 to 48 hours after being exposed to norovirus. Most people with norovirus get better within one to three days.

The U.S. Centers for Disease Control and Prevention said anyone who eats raw shellfish “is at risk of contracting norovirus. Children younger than 5 years old, older adults and people with weakened immune systems are more likely to develop severe infections.”

The FDA said it was advised on Feb. 3 by the Washington Department of Public Health about an illness outbreak associated with the oysters.

On Feb. 5, the California Department of Public Health issued a recall of the oysters.

Restaurants and retailers are advised to control the potential for cross-contamination by cleaning and sanitizing food contact surfaces and utensils. Employees should wash their hands with soap and warm water after the cleaning and sanitation process.