Dr. Supriya Sharma, chief medical adviser at Health Canada, speaks during a press conference to announce that Health Canada has authorized the Moderna COVID-19 vaccine, at the Sir John A. Macdonald Building in Ottawa on Wednesday, Dec. 23, 2020. THE CANADIAN PRESS/David Kawai

Dr. Supriya Sharma, chief medical adviser at Health Canada, speaks during a press conference to announce that Health Canada has authorized the Moderna COVID-19 vaccine, at the Sir John A. Macdonald Building in Ottawa on Wednesday, Dec. 23, 2020. THE CANADIAN PRESS/David Kawai

No unexpected side-effects from COVID-19 shots given in Canada so far: Health Canada

Most side effects subside within 24 hours

Health Canada has no reports of unexpected side-effects from patients vaccinated against COVID-19 thus far.

“There haven’t been any serious adverse events, or even the mild and moderate adverse events, that have been out of line or different than what we’ve seen in the clinical trials,” Dr. Supriya Sharma said in an interview with The Canadian Press Friday.

Sharma, Health Canada’s chief medical adviser, is overseeing the vaccine review process.

She said experts look for two things when reviewing data after vaccines are given. The first is whether anything happens that was not observed during the clinical trials, and the second is whether the side-effects that were documented during the trials are more severe or greater in number than what the trials saw.

The answer to both questions in Canada so far is no, said Sharma.

“It seems that the clinical trials are pretty representative,” she said.

The most common side-effects from the vaccines are short-term fever, pain at the injection site, headache and fatigue. Most subside within 24 hours.

Health Canada approved two vaccines for COVID-19 in December, including one from Pfizer and BioNTech and a second from Moderna.

Vaccinations began Dec. 14, and data aggregated by University of Saskatchewan student Noah Little shows about 230,000 doses have been given so far. Most of the first doses went to front-line hospital staff and long-term care workers and a smaller number of long-term care residents.

Vaccines began reaching some First Nations and northern territories this week.

Health Canada continues to review data from two other vaccine developers, AstraZeneca and Johnson & Johnson, but is still awaiting more data from the companies. Sharma said she can’t say when Health Canada would be ready to make a decision about either one.

Both companies are expected to complete Phase 3 clinical trials in the United States this month.

Mia Rabson, The Canadian Press

Like us on Facebook and follow us on Twitter.

Want to support local journalism? Make a donation here.

Coronavirus

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

Just Posted

Alberta Premier Jason Kenney said the Canadian government should consider sanctions on the U.S. if they refuse to reconsider the decision to cancel the Keystone XL Pipeline. (THE CANADIAN PRESS/Sean Kilpatrick
Keystone XL officially cancelled, Kenney vows to fight on

U.S. President Joe Biden cancelled the presidential permit for the pipeline on first day of office

Alberta’s chief medical officer of health Dr. Deena Hinshaw said province’s test positivity rate for COVID-19 is steadily declining. (Photo by Chris Schwarz/Government of Alberta)
669 new COVID-19 cases in Alberta, 21 additional deaths

COVID-19 test positivity rate down to 4.5 per cent

Kyla Gibson with her boyfriend Gavin Hardy. (Photo used with permission)
Sylvan Lake couple lose ‘fur babies’ to house fire

‘They were our world and nothing will ever replace them,’ Kyla Gibson said of her three pets

Alberta Chief Medical Officer of Health Dr. Deena Hinshaw reported an additional 456 COVID-19 cases over the past 24 hours. (photography by Chris Schwarz/Government of Alberta)
Five new COVID-19 deaths in Central zone, two in Red Deer

Province reports 456 new cases of COVID-19

Businesses are getting creative to keep cash flowing. (File photo)
Central Albertan lobbying government to help those affected by CERB repayments

Catherine Hay says she received a letter in November saying she had to completely repay the benefit

A scene from “Canada and the Gulf War: In their own words,” a video by The Memory Project, a program of Historica Canada, is shown in this undated illustration. THE CANADIAN PRESS/HO - Historica Canada
New video marks Canada’s contributions to first Gulf War on 30th anniversary

Veterans Affairs Canada says around 4,500 Canadian military personnel served during the war

(Thesendboys/Instagram)
Video of man doing backflip off Vancouver bridge draws police condemnation

Group says in Instagram story that they ‘don’t do it for the clout’

Toronto’s Mass Vaccination Clinic is shown on Sunday January 17, 2021. THE CANADIAN PRESS/Frank Gunn
Canadian malls, conference centres, hotels offer up space for COVID vaccination centres

Commercial real estate association REALPAC said that a similar initiative was seeing success in the U.K.

Kamala Harris and Joe Biden are sworn into office on Wednesday, Jan. 20, 2021, at the U.S. Capitol in Washington, D.C. (Saul Loeb/Pool Photo via AP)
Joe Biden has been sworn in as the 46th president of the United States

About 25,000 National Guard members have been dispatched to Washington

A memorial for the fatal bus crash involving the Humboldt Broncos hockey team at the intersection of Highways 35 and 335 near Tisdale, Tuesday, October 27, 2020. THE CANADIAN PRESS/Liam Richards
‘End of the road:’ Truck driver in Humboldt Broncos crash awaits deportation decision

Sidhu was sentenced almost two years ago to eight years after pleading guilty to dangerous driving

In this March 28, 2017, file photo, a dump truck hauls coal at Contura Energy’s Eagle Butte Mine near Gillette, Wyo. Public opposition to the Alberta government’s plans to expand coal mining in the Rocky Mountains appears to be growing. THE CANADIAN PRESS/AP/Mead Gruver, File
Alberta cancels coal leases, pauses future sales, as opposition increases

New Democrat environment critic Marlin Schmidt welcomed the suspension

File photo
Wetaskiwin Crime Reduction Unit recovers valuable stolen property

Property valued at over $50,000 recovered by Wetaskiwin Crime Reduction Unit.

In this March 28, 2017, file photo, a dump truck hauls coal at Contura Energy’s Eagle Butte Mine near Gillette, Wyo. (THE CANADIAN PRESS/AP/Mead Gruver, File)
First Nations seek to intervene in court challenge of coal policy removal

Bearspaw, Ermineskin and Whitefish First Nations are among those looking to intervene

Prime Minister Justin Trudeau provides an update on the COVID-19 pandemic from Rideau Cottage in Ottawa on Tuesday, Jan. 11, 2021. THE CANADIAN PRESS/Sean Kilpatrick
Prime Minister Justin Trudeau provides an update on the COVID-19 pandemic from Rideau Cottage in Ottawa on Tuesday, Jan. 11, 2021. THE CANADIAN PRESS/Sean Kilpatrick
Trudeau vows to keep up the fight to sway U.S. on merits of Keystone XL pipeline

Canada’s pitch to the Biden team has framed Keystone XL as a more environmentally friendly project than original

Most Read