Pharmacist Barbara Violo shows off a vile of the Oxford-AstraZeneca COVID-19 vaccine at the Junction Chemist during the COVID-19 pandemic in Toronto on Friday, March 12, 2021. THE CANADIAN PRESS/Nathan Denette

Pharmacist Barbara Violo shows off a vile of the Oxford-AstraZeneca COVID-19 vaccine at the Junction Chemist during the COVID-19 pandemic in Toronto on Friday, March 12, 2021. THE CANADIAN PRESS/Nathan Denette

Officials face battle of confidence over Canada’s use of Oxford-AstraZeneca vaccine

Unfounded doubts about efficacy, safety will see some people have a hard time accepting updated advice

Federal officials are mounting a renewed push to instill Canadian confidence in Oxford-AstraZeneca’s COVID-19 vaccine, but observers predict they’re in for a tough battle.

Members of the federal body tasked with advising the country on vaccine use took the unusual step of addressing public fears in a televised press conference Tuesday that stressed the vaccine’s safety for those over the age of 65.

The assurances come as new information leads to an update on previous advice, which initially suggested that seniors avoid the AstraZeneca vaccine because of insufficient trial data. NACI chair Dr. Caroline Quach-Thanh says there is now enough “real-world evidence” to show it is both safe and effective for seniors.

Infectious disease doctor Zain Chagla says it’s an important message, but confusing for Canadians as Germany and other European countries move to limit the vaccine’s use while they investigate reports of blood clots emerging after some inoculations.

The European Medicines Agency says there is no evidence of a safety concern and is “firmly convinced” that the benefits of the AstraZeneca shot outweigh the risks.

But Chagla says unfounded doubts about efficacy and safety have been deeply sown and some people will have a hard time accepting updated advice.

Reached earlier this week as he anticipated NACI’s revised guidelines, he noted the AstraZeneca product has been hit especially hard in recent weeks, on multiple fronts.

“Even if all of the dust settles on all of this stuff and it’s (proven) effective in 65-year-olds and it’s actually 80 per cent effective and there’s no clot risk, you’ve already introduced three strikes that are hard to wash away from people who are already hesitant to take this vaccine over Moderna and Pfizer,” Chagla, a specialist at St. Joseph’s Healthcare Hamilton.

Chagla said it’s up to NACI, Health Canada, and the various provincial health ministries to be transparent and clear on the evidence.

“This needs to be aggressively put out and people need to be really, really, really transparent, open and honest about this.”

Coronavirusvaccines

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Photo collage of loved ones lost to substance use and overdose. (Photo courtesy Moms Stop The Harm)
B.C. and Victoria’s overdose deaths still rising five years after public health emergency declared

Moms Stop the Harm calls on B.C. to provide safe supply in response to deadly illicit drug use

Former Saanich councillor Dean Murdock hosts a live episode of his podcast on April 14 and tackleto tackle housing issues in the region. (Devon Bidal/News Staff)
Live episode of Saanich podcast focuses on region’s housing issues

Dean Murdock, panel of guests go live on Zoom for Amazing Places podcast April 14

Queen Elizabeth II and Prince Phillip wave goodbye to the crowd at Vancouver International Airport in October 2002. (CP PHOTO/Richard Lam)
SOOKE HISTORY: Remembering dinner with the Queen and Prince Philip

Royal couple visited Victoria for Commonwealth Games banquet in 1994

New programs and services aimed at helping the unhoused find shelter or housing in Victoria, and to take advantage of support services of various kinds, could be funded if a City of Victoria grant application is successful. (Black Press Media file photo)
Victoria seeks $3M to $4M in grant funds to enhance community services for unhoused population

Various supports, services for unhoused population part of broad-based funding application

A Victoria parks staffer turns compost made from organics collected in the parks. Piles of this steaming, nutrient-rich stuff will be handed out between April 12-18. (Zoë Ducklow/News Staff)
Victoria shovels free home-made compost out to gardeners

Ideal for prepping food gardens, the compost, mulch and wood chips will be at city parks for pick up

Burnaby MLA Raj Chouhan presides as Speaker of the B.C. legislature, which opened it spring session April 12 with a speech from the throne. THE CANADIAN PRESS
B.C. NDP promises more health care spending, business support in 2021 budget

John Horgan government to ‘carefully return to balanced budgets’

A youth was arrested following a car crash on Wallace Street on Saturday, April 10. (Karl Yu/News Bulletin)
Onlookers laugh and jeer as B.C. teen beaten, then forced to strip and walk home

Police arrest older teen, call video shared on social media ‘disturbing’

A lady wears a sticker given out after receiving a COVID-19 vaccine at a clinic in Richmond, B.C., Saturday, April 10, 2021. THE CANADIAN PRESS
B.C.’s COVID-19 case count slows after last week’s peak

3,219 new cases since Friday, 18 additional deaths

North Cowichan councillor Tek Manhas did not violate the municipality’s code of conduct by posting a sexist meme on Facebook, council concludes. (File photo)
B.C. municipality to take no action against councillor who posted sexist meme

Tek Manhas’s meme doesn’t violate North Cowichan council’s code of conduct, municipality concludes

A 41-person air task force, including 12 members from 407 Long Range Patrol Squadron at 19 Wing Comox, seized more than $3 million CND worth of cocaine as part of Op Caribbe. Photo by Canadian Armed Forces Operations/Facebook
Vancouver Island team helps make $368 million three-tonne cocaine seizure

12 members from 19 Wing Comox involved in Op Caribbe

Killer whales surface near Sebastion Beach in Lantzville on Sunday, April 11. (Photos courtesy Ella Smiley)
Chainsaw and friends near the beach thrill orca watchers in Lantzville

Jagged-finned orca named Chainsaw and 17 others spent hours off Sebastion Beach this weekend

Nootka Sound RCMP and DFO Conservation and Protection Officers seized this 30 foot vessel, fishing gear and equipment as well as Chinook salmon, salmon roe, rock fish and ling cod after an investigation on Sept. 11. A judge in Campbell River on February hit the owner and his accomplices with significant fines, a ban on holding fishing licences and loss of equpment, including the boat’s motor and trolling motor. RCMP photo
Washington State trio’s fisheries violations the worst veteran officer has seen in 20 years

Judge bans three men from fishing or holding a fishing licence anywhere in Canada

—Image: contributed
Indoor wine tastings still allowed in B.C., not considered a ‘social gathering’

“Tasting is really just part of the retail experience. The analogy I use is you wouldn’t buy a pair of pants without trying them on.”

A sign on a shop window indicates the store is closed in Ottawa, Monday March 23, 2020. The Canadian Federation of Independent Business is raising its estimate for the number of businesses that are considering the possibility of closing permanently. THE CANADIAN PRESS/Adrian Wyld
Small business struggling amid COVID-19 pandemic looks for aid in Liberals’ budget

President Dan Kelly said it is crucial to maintain programs to help businesses to the other side of the pandemic

Most Read