The Oxford/AstraZeneca coronavirus vaccine is safe, but questions remain over its efficacy 1610612668-1607671001-_111915680_photo-2020-04-23-18-02-42
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1610612668-1607671001-_111915680_photo-2020-04-23-18-02-42

The AstraZeneca vaccine generated much excitement when it was first trialled in the UK. Initial handing of trial data, though, muddied the waters.
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