(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

Saanich Police honour officer who died in 1960

Const. Robert Kirby the only Saanich officer to be killed on duty

Unearthed music compositions written by Dunsmuir heiress

Music discovered in England by Craigdarroch curator to be played this Saturday at GVPL event

Greater Victoria School District adopts new dress code policy

Two years in the making, SD61 moves to more inclusionary guidelines

Esquimalt council green-lights first mass-timber building on Vancouver Island

Mayor appreciates 12-storey structure’s proximity to naval base, graving dock and Seaspan

Legal action against B.C. specualtion tax a last resort

Group of Arizona home owners feel they’ve been swept up in an attack on land speculators

Parents call for change to health laws after Oak Bay teen’s death

Accidental overdose has Elliot Eurchuk’s parents seeking change to B.C Infants Act

Memorial to victims of Toronto van attack continues to grow

The subway station where a van was used to run down pedestrians has reopened in Toronto

Small aircraft touches down on Calgary street

The twin-engine plane was apparently short on fuel forcing an emergency landing

B.C.’s living wage increase curbed due to MSP cuts, child care subsidy: report

Living wage varies between $16.51 in north central B.C. to $20.91 in Metro Vancouver

Amalgamation Yes hosting citizen’s assembly info meeting Wednesday at Vic High

Mayors of Victoria and Saanich will be on hand to give updates to residents

Doctor sees healing power in psychedelic plant as Peru investigates death of B.C. man

Peru’s attorney general has ordered the arrest of two suspects in the killing of 41-year-old Sebastian Woodroffe

Toronto police officer ‘gave himself the space and time’ in van attack

Footage shows officer standing up, turning off his siren and talking clearly to the suspect

$1.18 to $1.58 a litre: Are you paying the most for gas in B.C.?

Gas prices across B.C. vary, with lowest in Vernon and highest in – you guessed it – Metro Vancouver

Most Read