Is there a threshold of efficacy that you would no longer employ an original vaccine against?
On February 19th, 2021. See this statement in context.
On February 19th, 2021. See this statement in context.
February 19th, 2021 / 3:15 p.m.
Conservative
Michelle Rempel Conservative Calgary Nose Hill, AB
Is there a threshold of efficacy that you would no longer employ an original vaccine against?
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