Tens of thousands of people have now been given a coronavirus vaccine in the UK.
The nationwide roll-out began 10 days ago after the Pfizer/BioNTech jab became the first Covid-19 vaccine to get UK approval from the Medicines and Healthcare products Regulatory Agency (MHRA).
Donald Trump has now announced that another vaccine - from US firm Moderna - is ready to use in America.
Initial data shows it is nearly 95 per cent effective in protecting against Covid-19.
But has the Moderna vaccine been approved in the UK yet?
The Pfizer vaccine is still the only vaccine that can be administered in the UK - but the Moderna vaccine is likely to be approved soon.
To be approved for use in the UK, the jab must meet the strict standards of safety and effectiveness of the MHRA.
A rolling review of data from the vaccine's clinical trials is still underway.
At the end of November, the UK government managed to secure a further 2 million doses of the Moderna vaccine, taking its total to 7 million.
That is enough for around 3.5 million people, who will each receive two doses.
Moderna is scaling up its European supply chain which means these doses would become available in the UK in the spring at the earliest.
The UK now has access to a total of 357 million doses of vaccines from seven different developers.
While the Pfizer jab is already being administered, and the Moderna jab looks set to follow, a UK candidate from Oxford University is also likely to be approved shortly.
The lead researcher behind the Oxford vaccine, which is being developed with AstraZeneca, said she hopes the moment the jab is approved and rolled out “isn’t too far off”.
Data indicates the vaccine has 62 per cent efficacy when one full dose is given followed by another full dose, but when people were given a half dose followed by a full dose at least a month later, its efficacy rose to 90 per cent.
