Behind AstraZeneca’s Covid-19 Vaccine Stumble (WSJ)

A production problem at a single factory in Belgium has delayed tens of millions of doses destined for Europe, endangering the continent’s already-slow inoculation drive and representing the greatest threat so far to Dr. Soriot’s extraordinary pledge last year to vaccinate the world—and do so for no profit. After disclosing the European problem, the drugmaker now says it has been troubleshooting similar production issues in recent weeks as far away as the U.S. and Australia.

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