Pfizer Increases Spring Vaccine Schedule, Adds Five Million Doses to June Shipments

A health-care worker prepares a dose of the Pfizer-BioNTech COVID-19 vaccine at a UHN COVID-19 vaccine clinic in Toronto on Jan. 7, 2021. Nathan Denette/ The Canadian Press

OTTAWA—Canada’s promised spring supply of COVID-19 vaccines grew Tuesday with millions of additional doses now expected to arrive from three different suppliers before Canada Day.

But the news was tempered by ongoing concerns about the Oxford-AstraZeneca vaccine, and signs in much of the country that the pandemic still has a lot more misery to unleash.