Canada allows up to a 4 month gap between first and second doses, so they can give as many people their first dose as possible. In theory, it will allow Canada

Canada allows up to a 4 month gap between first and second doses, so they can give as many people their first dose as possible. In theory, it will allow Canada to achieve herd immunity earlier than it would otherwise. In practice, I guess we have to wait and see. https://www.theglobeandmail.com/opinion/editorials/article-how-a-four-month-gap-between-shots-could-end-canadas-pandemic-two/ https://www.theglobeandmail.com/opinion/editorials/article-h...