The Public Health Agency of Canada and federal and provincial public health partners are investigating an outbreak of norovirus and gastrointestinal illnesses involving four provinces: British Columbia (B.C.), Alberta, Saskatchewan, and Ontario. The outbreak is linked to the consumption of raw oysters from B.C. Some oyster harvesting areas in B.C. associated with illnesses have been closed as a part of the investigation. For oysters from B.C, food recalls were conducted on February 18, 2022, March 20, March 23, and March 27, 2022. The Canadian Food Inspection Agency (CFIA) continues its food safety investigation. As of March 30, 2022, there have been 279 cases of norovirus and gastrointestinal illness linked to the consumption of B.C. oysters reported in the following provinces: B.C. (262), Alberta (1), Saskatchewan (1), and Ontario (15). Individuals became sick between mid-January and late March 2022, and no reported deaths. Testing of several cases has confirmed the presence of norovirus infection. Some oyster harvest areas in B.C. associated with this outbreak have been closed as a part of the investigation.@ https://www.canada.ca/en/public-health/services/public-health-notices/2022/outbreak-norovirus-gastrointestinal-illness-linked-raw-oysters-british-columbia.html
