Covid vaccine: AstraZeneca amends US vaccine efficacy results (BBC)

BBC: Covid vaccine: AstraZeneca amends US vaccine efficacy results. “AstraZeneca has downgraded the efficacy result of its coronavirus vaccine trial in the US after health officials questioned the results. The Anglo-Swedish firm adjusted the efficacy rate of its vaccine against Covid-19 symptoms from 79% to 76%, but said the trial results confirm it ‘is highly effective in adults’.”

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