Thousands of people across the UK are being vaccinated against the coronavirus, as the country becomes the first in the world to roll out the Pfizer-BioNTech vaccine.
Around 800,000 doses are expected to be administered this week, with the elderly and front-line health workers first in line.
But logistical challenges mean most vulnerable people will have to wait until early next year.
Al Jazeera's Neave Barker reports from London.

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