BORIS Johnson has reassured Brits that the AstraZeneca jab is safe and effective - as he calmed nerves about the country's vaccine rollout. The PM spoke out to reassure worried Brits that they had nothing to fear by taking the jab, which he revealed he will get himself. And he promised that despite some issues with supply, the NHS was still on track to deliver a dose to every adult by the end of July as planned.
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