Britain is the first country to approve Pfizer's coronavirus vaccine for emergency use and Health Secretary Matt Hancock says the UK will be through Covid-19 "by spring".
A mass vaccination campaign will begin next week when the first 800,000 doses arrive from Pfizer's plant in Belgium, with the bulk of the rollout taking place in the new year.
The UK has ordered enough doses of the two-dose vaccine to inoculate 20million people, or about a third of the population. The Pfizer-BioNTech jab has been shown in studies to be 95% effective and works in all age groups, and it has been developed at incredible speed.
A process which usually takes years has been condensed to months. A vaccine is seen as the best chance for the world to get back to