Less than half the UK population could be vaccinated against coronavirus, according to the head of the country's vaccine taskforce.
Kate Bingham has told the Financial Times officials are hoping to be able to administer the medicine to around 30 million adults in the country of 67 million and "we just need to vaccinate everyone at risk".
"People keep talking about 'time to vaccinate the whole population' but that is misguided," the head of the immunisation program added.
"There is going to be no vaccination of people under 18.
"It's an adult-only vaccine for people over 50 focusing on health workers and care home workers and the vulnerable."
Last month it was reported by the Joint Committee on Vaccination and Immunisation care home residents were among those who should be at the top of the list for a jab when one becomes available.
Their interim guidance said the order of priority should start with:
- Older adults in a care home and care home workers
- All those 80 and over and health and social care workers, though they may move up the list
- Anyone 75 and over before considering other adults over 50.
Earlier on Sunday, Health Secretary Matt Hancock voiced his support for the prioritisation list at the virtual Conservative Party conference.
He also told viewers the armed forces will be involved in the roll-out of the medicine.
He described prioritisation as "important because we've got to get the vaccine to the people who are most likely to be badly affected by coronavirus first".
"But it is also important because people can know in advance that there is a prioritisation and we will reach people when it is clinically right to do that.
"And then there's a huge logistical operation which we're planning, led by the NHS with the support of the armed services to make sure we have the logistics in place to get this rolled out as fast as it is feasibly possible."