People 65 and over in England are being urged to get a top-up booster vaccine against Covid at a time when more people are coming into hospitals with the virus.
Those who are eligible can book via the NHS website, on the NHS app, or by calling 119.
The rollout has been brought forward as a precaution against a highly mutated new Covid variant called BA.2.86.
While hospital numbers are up, intensive care (ICU) ones are low.
Although the virus is mutating and changing, the vaccines still provide good protection against getting very sick with Covid, say experts.