Hopes have been raised that the coronavirus vaccine being developed by Oxford University and AstraZeneca could be more effective than first thought.
AstraZeneca chief Pascal Soriot told the Sunday Times he believed researchers had found the "winning formula" using two doses and promised to publish the results as reports suggested the UK regulator could approve the jab within days.
The claim will come as some relief even as Canada became the latest country to identify cases of the new highly infectious variant of coronavirus, which was first detected in the UK and has since spread to at least a dozen countries.
And Chancellor Rishi Sunak praised vaccination efforts so far, telling the Mail on Sunday: "There will be tough days and months
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