BRUSSELS — Bruised by major disruptions in supplies of the AstraZeneca and Johnson & Johnson vaccines, the European Union Wednesday announced it was putting trust and money into the Pfizer-BioNTech shot to salvage its vaccination rollout and secure doses for the future.
The pivot away from AstraZeneca, once a pillar of the E.U. inoculation program, comes after months of discord over delayed shipments and as the company battles worries over rare potential side effects of its shots.
In announcing the change in strategy, Ursula von der Leyen, president of the European Commission, said Pfizer had agreed to an early shipment of doses that she said should likely allow the bloc to reach its goal of inoculating 70 percent of adults by the end of the summer.
That goal was in jeopardy after AstraZeneca failed to deliver on expected doses in the first quarter of the year, then suffered fresh setbacks over potential side effects related to blood clots. The European vaccine campaign was dealt a further blow Tuesday when Johnson & Johnson said it would delay its own rollout in Europe because of similar concerns and after regulators paused its use in the United States.
supply disruptions from AstraZeneca in late January, and then with the emergence of the potential rare blood disorder that has battered the public’s confidence in vaccines and led to appointment cancellations.