Europe pushed to get its Covid-19 vaccination drive back on track on Friday after EU and British regulators said the benefits of AstraZeneca's shot outweighed any risks following reports of blood clots.

The end to the suspension of AstraZeneca shots by more than a dozen countries will now kick off a test of public confidence, both in the vaccine and regulators who are under unprecedented scrutiny as variants of the virus spread and the global death toll climbs beyond 2.8 million...