OTTAWA, ON, March 31, 2022 /CNW/ – Original Notice
Why should you take note?
The Public Health Agency of Canada is collaborating with federal and provincial public health partners to investigate an outbreak of norovirus and gastrointestinal illnesses involving four provinces: British Columbia (B.C.), Alberta, Saskatchewan and Ontario.
Based on the investigation findings to date, the outbreak is linked to consumption of raw oysters from B.C. Some oyster harvesting areas in B.C. that have been associated with illnesses in this outbreak have been closed as a part of the investigation. These closures aim to prevent further illness.
Food recalls were conducted on February 18, March 20, March 23, and March 27, 2022 for oysters from B.C. Links to each food recall associated with this investigation can be found at the end of this public health notice. The Canadian Food Inspection Agency (CFIA) is continuing its food safety investigation, which may lead to the recall of other products. If other products are recalled, the CFIA will notify the public through updated food recall warnings.
Do not eat, use, sell, or serve the recalled oysters.
Also, avoid eating raw or undercooked oysters to reduce your risk of foodborne illness and follow proper food handling practices. Cook oysters to an internal temperature of 90° Celsius (194° Fahrenheit) for a minimum of 90 seconds.
The outbreak investigation is ongoing and additional actions to protect public health will be taken as needed. This public health notice will be updated as the investigation evolves.
Investigation Summary
As of March 30, 2022, there have been 279 cases of norovirus and gastrointestinal illness linked to 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 deaths have been reported. Although not all cases of illness have been tested, testing of several cases has confirmed the presence of a norovirus infection.
Some oyster harvest areas in B.C. that have been associated with illnesses in this outbreak have been closed as a part of the investigation. Food recalls were conducted on February 18, March 20, March 23, and March 27, 2022 for oysters from B.C. For more information on the recalled products, please consult the Government of Canada’s Recalls and Safety Alerts website.
The CFIA is continuing its food safety investigation, which may lead to the recall of other products. If other products are recalled, the CFIA will notify the public through updated food recall warnings.
Who is most at risk?
Acute gastrointestinal illnesses such as norovirus illness are common in North America and are very contagious, affecting all age groups. However, pregnant women, people with compromised immune systems, young children and the elderly are at risk for developing more serious complications, like dehydration.
What should you do to protect your health?
Raw oysters contaminated with noroviruses may look, smell and taste normal. The following safe food-handling practices will reduce your risk of getting sick:
- Do not eat, use, sell, or serve any recalled oysters.
- Avoid eating raw or undercooked oysters. Cook oysters to an internal temperature of 90° Celsius (194° Fahrenheit) for a minimum of 90 seconds before eating.
- Discard any oysters that did not open while cooking.
- Eat oysters right away after cooking and refrigerate leftovers.
- Always keep raw and cooked oysters separate to avoid cross-contamination.
- Do not use the same plate or utensils for raw and cooked shellfish, and wash counters and utensils with soap and warm water after preparation.
- Wash your hands well with soap before and after handling any food. Be sure to clean and sanitize cutting boards, counters, knives and other utensils after preparing raw foods.
Noroviruses can be transmitted by ill individuals and are able to survive relatively high levels of chlorine and varying temperatures. Cleaning and disinfecting practices are the key to preventing further illnesses in your home.
- Thoroughly clean contaminated surfaces, and disinfect using chlorine bleach, especially after an episode of illness.
- After vomiting or diarrhea, immediately remove and wash clothing or linens that may be contaminated with the virus (use hot water and soap).
- If you have been diagnosed with norovirus illness or any other gastrointestinal illness, do not prepare food or pour drinks for other people while you have symptoms, and for the first 48 hours after you recover.
Symptoms
People with norovirus illness usually develop symptoms of gastroenteritis within 24 to 48 hours, but symptoms can start as early as 12 hours after exposure. The illness often begins suddenly. Even after having the illness, you can still become re-infected by norovirus.
The main symptoms of norovirus illness are:
- diarrhea
- vomiting (children usually experience more vomiting than adults)
- nausea
- stomach cramps
Other symptoms may include:
- low-grade fever
- headache
- chills
- muscle aches
- fatigue (a general sense of tiredness)
Most people feel better within one or two days, with symptoms resolving on their own, and experience no long-term health effects. As with any illness causing diarrhea or vomiting, people who are ill should drink plenty of liquids to replace lost body fluids and prevent dehydration. In severe cases, patients may need to be hospitalized and given fluids intravenously. If you have severe symptoms of norovirus, consult your healthcare provider.
What is the Government of Canada doing?
The Government of Canada is committed to food safety. The Public Health Agency of Canada leads the human health investigation of an outbreak and is in regular contact with its federal and provincial partners to monitor and take collaborative steps to address outbreaks.
Health Canada provides food-related health risk assessments to determine whether the presence of a certain substance or microorganism poses a health risk to consumers.
The CFIA conducts food safety investigations into the possible food source of an outbreak. The CFIA also monitors for biotoxins in shellfish in harvesting areas and is responsible for registering and inspecting fish and shellfish processing plants. The CFIA may recommend that affected sites or areas be opened or closed based on epidemiological information, sample testing results and/or relevant harvest area information.
Fisheries and Oceans Canada is responsible for opening and closing shellfish harvest areas and enforcing closures under the authority of the Fisheries Act and the Management of Contaminated Fishery Regulations.
Under the Canadian Shellfish Sanitation Program, Environment and Climate Change Canada monitors pollution sources and sanitary conditions in shellfish growing waters.
The Government of Canada will continue to update Canadians as new information related to this investigation becomes available.
Additional information
SOURCE Public Health Agency of Canada
View original content: http://www.newswire.ca/en/releases/archive/March2022/31/c0118.html
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