From some reason, this @BusinessInsider article from Feb 23rd is making the rounds today on social media: businessinsider.com/new-data-calls…
The sensationalist headline "Scotland's vaccine rollout suggests delaying the 2nd #COVID19 shot is a bad idea" requires some serious nuance.
1/6
The sensationalist headline "Scotland's vaccine rollout suggests delaying the 2nd #COVID19 shot is a bad idea" requires some serious nuance.
1/6
The news article references a Feb 19th pre-print: papers.ssrn.com/sol3/papers.cf…
This means that the study was neither peer-reviewed nor finalized when posted.
The pre-print reported a combined 58% vaccine effectiveness for #Pfizer and #AstraZeneca starting 42 days after 1 dose.
2/6
This means that the study was neither peer-reviewed nor finalized when posted.
The pre-print reported a combined 58% vaccine effectiveness for #Pfizer and #AstraZeneca starting 42 days after 1 dose.
2/6
This pre-print went on to be peer-reviewed and published last week in @TheLancet: thelancet.com/journals/lance…
@TheLancet study reported a combined 74% vaccine effectiveness for #Pfizer and #AstraZeneca starting 42 days after the first dose (77% for the #Pfizer vaccine alone).
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@TheLancet study reported a combined 74% vaccine effectiveness for #Pfizer and #AstraZeneca starting 42 days after the first dose (77% for the #Pfizer vaccine alone).
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The U.K. has seen remarkable control of the pandemic with a strategy maximizing first vaccine doses for as many as possible.
Modelling work led by @BeateSander shows that such an extended dose interval strategy will also save more lives in Canada: medrxiv.org/content/10.110…
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Modelling work led by @BeateSander shows that such an extended dose interval strategy will also save more lives in Canada: medrxiv.org/content/10.110…
4/6
Sharing this article without proper context and fear-mongering statements are harmful.
Of course it is important to continuously evaluate and update Canada's vaccine strategy as new data emerges—@cdavidnaylor and @BogochIsaac have written about this: theglobeandmail.com/opinion/articl…
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Of course it is important to continuously evaluate and update Canada's vaccine strategy as new data emerges—@cdavidnaylor and @BogochIsaac have written about this: theglobeandmail.com/opinion/articl…
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This includes determining which populations:
1. Require two doses following the same interval as the clinical trials
2. Should be prioritized for earlier second doses
#NACI has compiled and reviewed the existing evidence on extended dose intervals: canada.ca/en/public-heal…
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1. Require two doses following the same interval as the clinical trials
2. Should be prioritized for earlier second doses
#NACI has compiled and reviewed the existing evidence on extended dose intervals: canada.ca/en/public-heal…
6/6
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