Mistake Delays Shipments Of Johnson & Johnson Vaccine

Shipments of Johnson & Johnson's coronavirus vaccine are on hold after a manufacturing mistake ruined millions of doses. Workers at a Baltimore plant that makes both Johnson & Johnson's vaccine and one by AstraZeneca accidentally mixed up the two companies' ingredients. That ruined about 15 million doses of Johnson & Johnson's vaccine. The Baltimore plant was supposed to start shipping the single dose vaccine, but that process is on hold after the mistake. 

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