AstraZeneca says its COVID-19 vaccine is now 76% effective at preventing symptomatic cases of the disease.
In a statement late last night, the British drugmaker announced it had recalculated its U.S. study data after reporting earlier this week the shot was 79% effective.
Federal health officials had raised concerns over the company's previous conclusion, saying it was based on cherry-picked information.
AstraZeneca plans to seek FDA approval for its vaccine in the coming weeks.
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