(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

City of Campbell River to study future impacts of sea level rise

$325,000 of the total project cost of $505,000 will come from grants, $180,000 from city itself

Campbell River man drives his 1927 Studebaker to his 90th birthday

Dave Proctor picked up his 1927 Studebaker in 1957 when he spotted… Continue reading

Bald is beautiful

Campbell River couple raise money for mental health, shave heads in celebration

Campbell River to mark Day of Mourning for those killed on the job

Workers killed on the job will be remembered in Campbell River on… Continue reading

Campbell River city council considering going ‘blue’

Move would involve banning bottled water at all city facilities and events

Could facial scans and fingerprints make you unhackable?

New biometrics capabilities could be a game-changer for those trying to get on your accounts

Countdown is on to the 2018 B.C. Summer Games

Cowichan Valley hosts on July 19-22

Driving Change: A B.C. man’s charitable trip across Canada

A Kelowna man, his bus, and his mission for positive change across our country

Case of teacher secretly filming teens reaches top court

Acquittal of teacher, Ryan Jarvis, who secretly videoed teens ‘dangerous,’ top court told

Why a 14-year-old will lead the charge at annual marijuana protest on the Hill

Marijuana enthusiasts have long been circling April 20 on their calendars as annual day of cannabis

B.C. communities await marine spill compensation years after incidents

The government maintains a Ship Source Oil Pollution Fund to compensate Canadians

RCMP say too early to know what happened in Broncos crash

RCMP Assistant Commissioner Curtis Zablocki said collission very complex

Conservative MP wants feds to close loophole for illegal border crossers

Immigration advocates call on government to suspend Canada-U.S. Safe Third Country Agreement

Alberta university criticized for honouring David Suzuki

University of Alberta plans to bestow environmentalist with honourary degree

Most Read