A group of rich countries has already agreed to buy roughly 600m doses of the Pfizer-BioNTech drug = 1/2 total

A group of rich countries has already agreed to buy roughly 600m doses of the Pfizer-BioNTech drug = 1/2 total the drugmakers can produce by end of 2021. Canada has most vaccine purchases per capita.
economist.com/graphic-detail… https://t.co/BGwh9bLSlX

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