Source: James Gallagher, BBC, 11/23/20

The coronavirus vaccine developed by the University of Oxford is highly effective at stopping people developing Covid-19 symptoms, a large trial shows. Interim data suggests 70% protection, but the researchers say the figure may be as high as 90% by tweaking the dose. The results will be seen as a triumph, but come after Pfizer and Moderna vaccines showed 95% protection.

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