Why we can be confident in the safety of Covid vaccines

At the beginning of the Covid crisis, some expressed the hope that a pandemic might at least bring a divided country back together. Instead, public discourse descended to new levels of bitterness as a fresh schism replaced that caused by Brexit. On one side were those who thought tens of thousands would die because government action was too slow and half-hearted, and on the other, those who thought lockdown to be an over-reaction that inflicted grave damage on our economy and society.