Tuesday, 28 September, 2021

COVID-19: Second dose of AstraZeneca vaccine no longer recommended in Canada

Pfizer, Moderna vaccines now preferred second dose for AstraZeneca recipients: NACI NACI Offers New Advice For 2nd AstraZeneca Shots
Sandy Nunez | 19 June, 2021, 17:45

Lawyers for the European Commission said that they won on "principle", while AstraZeneca highlighted that the court had dismissed E.U. demands over deliveries and acknowledged difficulties the company faced in an "unprecedented situation".

The National Advisory Committee on Immunization said Thursday people who got the Oxford-AstraZeneca vaccine as their first dose should get Pfizer-BioNTech or Moderna for their second shot.

Australia's media said this was the advice of chief medical officer Paul Jelly this week, after two women died from an extremely rare blood clotting disorder and 60 Australians out of the 3.8 million who got the shot developed blood clots.

The provincial Ministry of Health issued a statement Friday saying it will continue to use the AstraZeneca vaccine as a second dose for those who want it.

"Mixing an mRNA after a dose of AstraZeneca may give some boost to the immune system, but we don't know whether that translates into whether you're better protected or not".

There are no further shipments of AstraZeneca scheduled.

"It therefore seems that AstraZeneca has intentionally chosen not to use the means at its disposal to manufacture and deliver the disputed vaccines", the ruling said.

"The bottom line is those three vaccines are safe and extremely effective", Masri said.

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It comes less than a week after Canada promised to donate 13 million doses to the COVAX vaccine-sharing alliance, which will entirely come from the remaining share of doses Canada had purchased from COVAX itself.

AstraZeneca initially committed in a contract with the European Union to do its best to deliver 300 million doses to the 27-nation bloc by the end of June, but production problems led the company to revise down its target to 100 million.

Dr. Tam stressed that NACI's guidance has evolved with emerging evidence, while recognizing that it can be hard to understand and catch up to the changes being made.

NACI also recommended that an mRNA vaccine is preferred as a first dose unless one is inaccessible or there is a contraindication, for example, an allergy to an mRNA vaccine or its components.

Saskatchewan's health-care system has experienced less strain since the introduction of vaccines.

Canada expects to have fully vaccinated 75 per cent of all eligible Canadians - everyone over the age of 12 - by the end of July, and has administered 78 doses for every 100 Canadians. He said those who are skeptical about vaccines should talk to their family doctor, or family and friends who have gotten theirs. "Regretting your decisions actually might be too late", he said.

Masri said there was one patient in the ICU who ended up dying from COVID-19 who had expressed their regret about not getting vaccinated.