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Lost in the Pfizer press release that vaccine is 90% effective: ‘Percentage may vary’

Article content continued “I just want to see the evidence.” Canada has bought the rights to 20 million doses of Pfizer’s vaccine. Ottawa, hedging its bets, has also signed pre-order agreements with Quebec-based Medicago, Moderna and other companies for up to 358 million doses of different vaccine candidates. A federal advisory committee has recommended those… Read More »