(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

Firefighters respond to roadside brush fire

Fire next to Highway 97 being brought under control.

Mixed martial arts event comes to Penticton

Xcessive Force Fighting Championship comes to the Penticton Trade and Convention Centre

Come dance between the lakes

Powwow Between the Lakes returns to Penticton Indian Band in August

Award-winning rockers The Glorious Sons to play Kelowna

Fresh off supporting the Rolling Stones in France, the Canadian band will play Prospera Place Nov. 5

B.C. Wine Info Centre feeling the impact of striking casino workers

The casino isn’t the only Penticton business feeling the brunt of the strike action

Trudeau asks transport minister to tackle Greyhound’s western pullout

Prime Minister Justin Trudeau says he’s asked Transport Minister Marc Garneau to find solutions in Greyhound Canada’s absence.

Wildfire remains uncontained near Kalamalka Lake

Lake Country - The fire started near Dee Lake, southwest of Coldstream yesterday

Crashes reach ‘all-time high’ across B.C.: ICBC

Auto insurer recorded more than 350,000 crashes n in 2017

Photo Gallery: The moon through an Okanagan lens

Photos of Sunday’s moon from Okanagan-Shuswap residents

Pressure on for ride hailing, bus options in B.C.

Premiers to press Ottawa for help replacing Greyhound service

Usain Bolt to make run at pro soccer in Australia

Olympic sprint great has long expressed his love of the game

Kelowna shooting victim remains in hospital

The woman injured in Friday’s shooting remains in hospital according to police

Duchess of Sussex wears dress by Calgary’s Nonie to Mandela exhibition

Nonie is believed to be the first Canadian based ready-to-wear designer for the duchess

Most Read