The UK's become the first country to approve a Covid vaccine that targets both the original strain and Omicron variant.
The Moderna jab has been given the green light by the M-H-R-A after it was found to meet the UK regulator's standards of safety.
It's thought the booster dose may only need to be given once a year.
Darius Hughes, the general manager of Moderna UK, explains what can be expected next..
