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Friday, April 23, 2021

AstraZeneca vaccine 76% effective in updated US trial

AstraZeneca has revised down by three percentage points the effectiveness of its Covid-19 vaccine after American authorities raised concerns that results reported from its US trial were outdated.

The company now says its vaccine is 76 rather than 79% effective at preventing any kind of symptomatic Covid-19.

It remains 100% effective against severe Covid-19 infection.

The move came after an independent panel of experts appointed to supervise the trial expressed concern that AstraZeneca had failed to include updated data in its initially released figure.

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