Ontarians encouraged to see mRNA shots as interchangeable as more 2nd doses open up
Officials and experts emphasized the interchangeability of the Moderna and Pfizer-BioNTech vaccines on Monday as many more Ontarians became eligible to book accelerated second shots.
The province said its shipment of Pfizer COVID-19 vaccines for the week had been delayed by a few days, so a large supply of Moderna would be used at many appointments, meaning residents may end up with a different mRNA shot for their second dose.
The government has been encouraging residents to get fully immunized as soon as possible by taking the most readily available second dose.
"If you had Moderna or Pfizer for your first dose you can safely take either for your second. If you had AstraZeneca for your first dose you can safely take AstraZeneca, Moderna or Pfizer for your second," Health Minister Christine Elliott said on Twitter on Monday.
Residents who got a first dose of an mRNA vaccine on or before May 9 were able to book second doses starting at 8 a.m. Monday, while those in Delta variant hot spots who got their initial jabs on or before May 30 can do the same on Wednesday.
Canada's National Advisory Committee on Immunization has found "no important difference" between Moderna and Pfizer, which both use similar mRNA technology.
Peel Region highlighted that point in a social media statement on Monday.
"Moderna and Pfizer -- their labels may be different, but they use the same technology to protect us," it wrote on Twitter.
Experts encouraged people to get whichever of the two mRNA shots they're offered as their second dose.
"With this week's delayed Pfizer vaccine shipments, I'm concerned about people delaying dose 2 because they are being offered Moderna vaccine," Dr. Jeff Kwong, an epidemiologist with the University of Toronto, said on Twitter. "The last thing we want is any loss of momentum in our flourishing vaccine rollout."
Kwong said analyses of data compiled by the independent research organization ICES show that two doses of Moderna are "just as good" as two of Pfizer in preventing infections.
As a result, he said there's no reason to think one dose of Pfizer and a second of Moderna would be any worse than two doses of the Pfizer vaccine.
Other experts expressed similar sentiment, noting people regularly get different brands of other vaccines without thinking twice.
"If you got a flu shot this year, you likely don't know the brand. Neither do I. They're made by separate companies," Dr. Zain Chagla, an infectious disease specialist at St. Joseph's hospital in Hamilton, Ont., said in a tweet. "Moderna and Pfizer are interchangeable."
The province noted that youth will continue to received the Pfizer shot since it is currently the only one approved in Canada for those under 18.
Ontario's vaccine rollout is progressing well, with 76 per cent of adults vaccinated with one dose and 24 per cent of adults fully immunized as of Monday.
Cases have been dropping -- the province reported 270 new infections Monday and three more deaths. But there are concerns about the more transmissible Delta variant, which is poised to become dominant, since science shows people with one dose are less protected against it.
Health units covering Toronto, Peel, Halton, Porcupine, Wellington-Dufferin-Guelph, Waterloo and York, Hamilton, Simcoe-Muskoka and Durham are considered hot spots for the more infectious variant.
- With files from Paola Loriggio
This report by The Canadian Press was first published June 21, 2021.
CTVNews.ca Top Stories
4th Indian national arrested, charged with murder of Hardeep Singh Nijjar
Homicide investigators in B.C. say murder charges have been laid against a fourth Indian national in connection to the killing of Sikh activist Hardeep Singh Nijjar outside a Surrey gurdwara last year.
Man ticketed after allegedly trespassing again at Drake's Bridle Path mansion to get his bike
A man who tried to access Drake’s Bridle Path mansion earlier this week returned to the property Saturday and was apprehended again for allegedly trespassing, Toronto police say.
Switzerland's Nemo wins 68th Eurovision Song Contest
Swiss singer Nemo won the 68th Eurovision Song Contest on Saturday night with 'The Code,' an operatic ode to the singer’s journey toward embracing their nongender identity.
Wildfire that forced evacuation of Fort Nelson, B.C., caused by tree falling on wires, mayor says
The wildfire that prompted the evacuation of more than 3,000 people near Fort Nelson, B.C., was caused by a tree falling on wires, according to the municipality's mayor.
Couple randomly attacked, 1 stabbed, by group of teens in Toronto, police say
A man has been transported to hospital after police say he was stabbed in a random attack carried out by a group of teens in Toronto on Friday night.
'I am angry': Alberta farmers will continue fight over world class motorsport resort
The rolling hills leading to the hamlet of Rosebud are dotted with sprawling farms and cattle pastures -- and a sign sporting a simple message: No Race Track.
IN PICTURES Northern lights dance across the night sky in southern Ont.
From London, to Grand Bend, Collingwood and Guelph, here are some highlights of Friday night and Saturday morning's northern lights display.
Ron Ellis, who played over 1,000 games with Maple Leafs, dead at 79
Ron Ellis, who played over 1,000 games with the Toronto Maple Leafs and was a member of Canada's team at the 1972 Summit Series, has died at age 79.
opinion How to use your credit card as a powerful wealth-building tool
Irresponsibly using a credit card can land you in financial trouble, but personal finance columnist Christopher Liew says when used properly, it can be a powerful wealth-building tool that can help grow your credit profile and create new opportunities.