AstraZeneca Admits To Mistakes In Coronavirus Vaccine Trial

AstraZeneca, in collaboration with the University of Oxford, conducted a COVID-19 vaccine trial. The vaccine showed 90% efficacy with 1.5 doses but only 62% with two full doses. A manufacturing issue led to some vials having lower concentrations, which has been corrected. The trial results will be reviewed by UK regulators for potential approval.

What mistake did Astra Zeneca admit to during its clinical trial?

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What was the average effectiveness of the vaccine when participants received 1 1/2 doses?

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What issue did Oxford acknowledge regarding the vials used in the trial?

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What action did the university take after discovering the manufacturing problem?

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What will UK regulators determine regarding the vaccine?

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