Health Canada approves 4th COVID-19 vaccine as Pfizer agrees to accelerate deliveries

Health Canada approves 4th COVID-19 vaccine as Pfizer agrees to accelerate deliveries
Canada’s national campaign to inoculate people against the novel coronavirus got good news on two fronts today: one vaccine maker now plans to accelerate its deliveries and federal regulators have cleared a fourth COVID-19 vaccine for use in this country.
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