![AstraZeneca will likely re-test its COVID-19 vaccine, CEO says after admitting an error in the first trial that may have skewed results](https://cdn.newsserve.net/ONPglobe256.png)
AstraZeneca will likely re-test its COVID-19 vaccine, CEO says after admitting an error in the first trial that may have skewed results
AstraZeneca announced Monday that its vaccine was up to 90% effective at preventing COVID-19. But an error in the trial may warrant a fresh test.
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