Pfizer or Moderna? ‘There is no better or worse,’ says Ontario COVID-19 chief scientist – National – .

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Pfizer or Moderna? ‘There is no better or worse,’ says Ontario COVID-19 chief scientist – National – .


Pfizer or Modern?

This is the COVID-19 vaccine question that more and more Canadians are asking as the country adjusts to the privileged position of having millions of doses of both in circulation, compared to the vaccine shortage of first months of the year.

But anyone worried about having to weigh the two mRNA vaccines can rest assured: there is no wrong answer, and no advantage in seeking one over the other.

“These are interchangeable,” said Dr. Peter Jüni, director of the Ontario COVID-19 Scientific Advisory Table, in an interview with West BlockIt’s Mercedes Stephenson.

“It’s like a brand of gasoline. Basically these two are really so close to how they’re produced, concepts, etc. We also know this when we look at antibody responses.

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“It’s important to keep in mind. There is no better or worse between these two.

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Jüni’s comments come as the country is in the midst of a massive influx of vaccines.

Sixty-eight million doses of the COVID-19 vaccine are expected to arrive next month, while June saw a huge increase in shipments. The proportion of eligible Canadians who received at least one vaccine climbed to 70%, although this represents just over 60% of the total of Canadians who received at least one injection.

Despite this, Canada is slow to administer the second doses. About nine percent of Canadians have a second dose of a COVID-19 vaccine, and the change in advice on where to get a second dose has fueled frustration among some who have received AstraZeneca.

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The National Advisory Committee on Immunization (NACI) changed its guidance last week for AstraZeneca recipients, advising people who received this vaccine as their first dose to get mRNA as a ‘preferred’ option for a second dose. if possible.

This comes as cases of the Delta variant increase and it is poised to become the main strain of the virus circulating in Ontario.

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“They absolutely did the right thing,” Jüni said of anyone who received AstraZeneca, whether in the first or second dose, and stressed that the vaccine was still excellent at preventing serious consequences and death. .


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Do you have both doses of the AstraZeneca vaccine? Here’s what you can and can’t do


Do you have both doses of the AstraZeneca vaccine? Here’s what you can and can’t do

He said what is happening now as the Delta variant spreads is “a real-time evolution,” and this poses new concerns that weren’t so clear when less infectious and less severe strains were more common.

“We now have the situation where the Delta variant is about to take over Ontario, for example, and we just have to react to it,” he said, pointing to new evidence from the UK. United.

“This evidence just makes it clear, yes: two hits from Pfizer or then also one hit from AstraZeneca followed by one hit from Pfizer or Moderna are just the best choice to bring this pandemic under control and keep it under control.”

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He noted that vaccine rollout also poses challenges for parents, who might be able to get fully immunized in the short term but who are wondering what to do with their children: for example, when unvaccinated children of parents completely do so. a 14-day quarantine if they travel?

Jüni said he understands that it is difficult for many parents to wait for news on when a vaccine will be approved for children, but that the focus must be on keeping new variants out of the country. .

“From my perspective, that would mean that if we are traveling with children, the children would have to undergo the regular quarantine and would have to be tested repeatedly, not just once,” he said.

“It’s just like that right now. We do not have approved vaccines for children.

As vaccines continue to roll out, Jüni said he hopes to continue to see strong vaccine uptake so that the country can reach the benchmark of around 85% of the fully vaccinated population.

“Right now we are really on the right track. So I hope we will continue to do so. We also have an extraordinarily low amount of vaccine hesitancy in this country, ”he said.

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“I hope it will stay that way. “


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Tam warns of ‘resurgence’ of COVID-19 in fall if immunization coverage rate in Canada is not high enough


Tam warns of ‘resurgence’ of COVID-19 in fall if immunization coverage rate in Canada is not high enough

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