The Medical Director of NHS England has said the mass vaccination programme for Covid-19 marks “the beginning of the end” of the pandemic.
However Professor Stephen Powis warned that it would take many months to vaccinate everybody who urgently needs protection.
Batches of the vaccine have started to arrive at hospitals. Around 800,000 doses are expected to be available across the UK in the first week.
Reeta Chakrabarti presents BBC News at Ten reporting by science editor David Shukman.
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