The U.S. Food and Drug Administration is working with federal, state, and local officials regarding a norovirus outbreak linked to raw oysters from British Columbia, Canada. The FDA has confirmed that potentially contaminated raw oysters harvested in the south and central parts of Baynes Sound, British Columbia, Canada, were distributed to California, Illinois, Massachusetts, New York, and Washington. It is possible that additional states received these oysters either directly from Canada or through further distribution within the U.S.

FDA and the states are conducting a traceforward investigation to determine where the raw oysters were distributed and ensure they’re removed from the food supply. Retailers should not serve raw oysters harvested from the following harvest locations (or landfiles) within Baynes Sound: #1402060, #1411206, #1400483, and #278757.

Oysters can cause food-related illness if eaten raw, particularly in people with compromised immune systems. Food contaminated with noroviruses may look, smell, and taste normal.

Currently in Canada, a total of 172 cases of gastrointestinal illness linked to oyster consumption have been reported in three provinces: British Columbia (132), Alberta (15), and Ontario (25). No deaths have been reported. Individuals became sick between mid-March and mid-April 2018.