(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

Snapshot: Shuswap musicians pay tribute to Pete Seeger

Wildwood Productions Group concert shows many sides of singer’s work

Rain on the way for the Okanagan-Shuswap

Vernon’s dust warning is ongoing

Kangaroo Creek Farm hops into season

Lake Country’s popular tourist site has opened its doors for the season

Province announces $18.6 million for B.C. Search and Rescue

The funding, spread over three years, to pay for operations, equipment, and training

Update: Highway 3 reopened following rockslide near Keremeos

The slide occurred Friday March 22, at about 8 p.m. between Red Bridge and Standing Rock

Sparks fly as SUV speeds down wrong side of Highway 1 trying to flee RCMP

Captured on video, the vehicle headed westbound against oncoming traffic before crashing

Kootnekoff: R v. Sidhu, was he asleep?

Driver in Humboldt crash wasn’t distracted at time of collision with bus,… Continue reading

Trudeau calls May 6 byelection for B.C. riding of Nanaimo-Ladysmith

The riding opened up when Sheila Malcolmson resigned in January

B.C. VIEWS: The hijacking of our education system gathers speed

Children taught to strike and shout fringe far-left demands

Judges on Twitter? Ethical guidance for those on the bench under review

Canadian judges involvement in community life are among issues under review

Four people displaced by Taylor Road fire

The Kelowna Fire Department say no one was injured and the cause of the fire is not suspicious

Calgary captain has 3 points as Flames torch Canucks 3-1

Giordano leads way as Alberta side cracks 100-point plateau

Okanagan woman launches sewing studio

“I know there’s a lot of people up and down the valley that would love to sew.”

1,300 cruise ship passengers rescued by helicopter amid storm off Norway’s coast

Rescue teams with helicopters and boats were sent to evacuate the cruise ship under extremely difficult circumstances

Most Read