(AP Photo/Kamran Jebreili)

Two B.C. oyster farms closed by norovirus

Officials report 40 cases of the illness in the past month after people had eaten raw oysters

Health officials in British Columbia have closed two oyster farms amid an investigation into another outbreak of norovirus linked to the consumption of raw oysters.

The BC Centre for Disease Control says there have been about 40 cases of the acute stomach upset since early March and all those who became ill reported eating raw oysters from B.C.

READ MORE: Tofino faces shellfish closures after norovirus outbreak hits 120

READ MORE: Ocean currents tied to B.C. norovirus outbreak: CDC

The centre says laboratory testing confirms the presence of norovirus in some of the cases and the illness is suspected in the rest of those who have become ill.

An exact source of the contamination has not been determined but the centre says human sewage in seawater is the most likely cause.

Nearly 350 cases of norovirus linked to raw or undercooked B.C. oysters were reported in B.C., Alberta and Ontario starting in late 2016 and continuing through early 2017, forcing the closure of 13 oyster farms on the B.C. coast.

That outbreak was declared over in April 2017, and an article published the British Columbia Medical Journal last June determined sewage spread by ocean currents caused the widespread contamination.

Researchers concluded the outbreak disproved claims that shellfish is safe to eat between September and April, and noted that bacteria, viruses and biotoxins persist in cold sea water year-round.

The centre says it does not recommend eating raw oysters and advises the shellfish should be cooked to an internal temperature of 90 C for 90 seconds to kill pathogens.

The Canadian Press

Like us on Facebook and follow us on Twitter.

Just Posted

Green Aura cannabis dispensary shuts down

Decision follows appearance at North Cowichan council meeting

Drought alert posted for Koksilah and Chemainus Rivers

Around the Cowichan region hot, dry weather is drying up tributary streams as well

Canadian Tire delivers toys to ease kids’ street play pain in Chemainus

It’s like Christmas for 11 kids who are supposed to be confined to their yards by strata bylaw

Demolishing old Crofton Elementary School can’t come fast enough

Residents getting action on abandoned building that’s such an eyesore to the community

Two Chemainus Secondary students rewarded for their woodworking

Fotheringham and Gladman take home two of North Cowichan’s available three awards

VIDEO: Trudeau shuffles familiar faces, adds new ones to expanded cabinet

Justin Trudeau shuffles his front bench Wednesday to install the roster of ministers that will be entrusted with leading the Liberal team into next year’s election.

Wildfires erupt in B.C. Okanagan forcing evacuation orders and a highway closure

Check out a list of up-to-date information on blazes happening within the Kamloops Wildfire Centre.

Grizzly bear jumps in river, chases B.C. kayaker

The bear got a bit too close for comfort along the Elaho River near Squamish

Island man convicted of 1999 sex assault at Fraser Valley music festival

James Allen Redden, formerly of Nanaimo, was found guilty of three charges

Parks Canada looks to shine light on cloudy future for historic sites

A plan is in place to produce 10-year plans designed to turn around sagging attendance figures

B.C. poet shines a bright light on struggle with homelessness

Book launch for John La Greca’s Homeless Memorial is at Vernon’s Gallery Vertigo July 21.

Ontario police say attack on Muslim man was motivated by hate

Two men, aged 27 and 19, have been charged with assault in the incident

City orders largest Kinder Morgan protest camp to leave

Residents of Camp Cloud near the Trans Mountain work site have 72 hours to leave

14-year-old pilot attempts to break Guinness World Record at B.C. airport

Mohd Shaikhsorab wants to become youngest pilot with fewest hours logged to fly solo

Most Read