(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

West Kootenay police take 18 impaired drivers off the road

Eight drivers were criminally impaired, says Sgt. Badry from West Kootenay Traffic Services

West Kootenay highways a mess as heavy snowfall continues

‘Roads are very icy, people have to be patient and have to slow down’

Nelson-area man wants trapping laws changed after dog killed

Louis Seguin’s 10-month-old Australian shepherd died in a body-gripping trap last month

Snowfall warning across the West Kootenay

A strong Pacific frontal system had Environment Canada issuing a snowfall advisory early Tuesday

Over $25,000 raised for Columbia Basin literacy

Success for 2018 Books for Kids campaign

Man caught on camera allegedly trying to defraud ICBC

Auto-insurer warns B.C. drivers to record info after crashes

Teenager Alphonso Davies wins Canadian Men’s Soccer Player for the Year Award

Derek Cornelius and Chilliwack native, Jordyn Huitema were named Canadian Youth International Players of the Year

B.C. teen MMA fighter show heart

Young Unity MMA competitors bring home Ws

2,000 Canadians died of an overdose in first 6 months of the year

New data from the Public Health Agency of Canada shows the crisis is not subsiding

Another B.C. city votes to ban single-use plastic bags

First six months of proposed ban would focus on education, not enforcement

UK Prime Minister Theresa May wins party no-confidence vote, but troubles remain

May won the vote of 317 Conservative legislators with a 200-117 tally

B.C. trustee’s anti-LGBTQ comments got him barred from schools

Barry Neufeld calls vote to leave him off liaison list ‘workplace discrimination’

Firm says trees obstructing vision at Humboldt Broncos crash intersection

Sixteen people died and 13 others were injured in the collision at an intersection north of Tisdale

Man charged after B.C house fire triggers high-grade explosives

Thomas Daniel Kendall charged with causing bodily harm by failing to properly store explosives

Most Read