Healthy adults under the age of 50 have been given just two-and-a-half weeks to take up the offer of a booster.
The UK Health Security Agency is investigating the extent of community transmission.
Only those at high risk will receive the vaccine, according to UK health officials.
Getting a third dose, no matter which you had previously, could be the way.
It doesn't look like the booster programme is going to end anytime soon.
Why the Covid variant you caught and the number of vaccines you've had matter.
The UK's medicines regulator is the first in the world to approve the Valneva product.
The Pfizer CEO reckons we might all need four (or more) vaccinations.
Pfizer CEO Albert Bourla brought up the possibility of a second COVID-19 booster shot as cases of coronavirus continue to dip in some areas.
As a convoy of vehicles clogs the Washington Beltway to protest fading vaccine mandates, they were met with disapproval from fellow drivers.