AZ exits US vaccine plant after mix-up spoils J&J’s COVID jab

The mix-up at the facility operated by contract manufacturer Emergent BioSolutions resulted in ingredients destined for AZ’s AZD1222 jab being mixed into vials of the J&J product, rendering them unusable, according to media reports. Emergent claims however that one batch of the vaccine simply failed quality controls, and no contamination took place. The FDA says it is investigating the incident.
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