GPs in England can defer some of the services they provide to patients to allow them to deliver Covid booster jabs instead, NHS chiefs have said.
Practices can postpone minor surgery and routine health checks for over-75s and new patients until 31 March.
It comes after the PM said
all adults in England would be offered boosters by the end of January in response to the emergence of the Omicron variant.
A further 75 Omicron cases were confirmed in England on Friday.
The latest cases take the total for England to 104 and for the UK as a whole to 134 - including the first confirmed case in Wales.
Prime Minister Boris Johnson's announcement of an expansion of boosters on Tuesday followed a
series of recommendations made by the Joint Committee on Vaccination and Immunisation.
As well as recommending that all over-18s in the UK should be offered top-up vaccines, the JCVI said the minimum gap between the second dose and boosters should be cut from six to three months.
In a
letter released on Friday, NHS England acknowledged services were already under pressure but said there was a new "national mission" to increase vaccine capacity.
Setting out steps for ramping up the booster roll-out, the letter said the Army and "clinical students" could be called on to help deliver vaccines.
It also said the
NHS's booking service for vaccinations in England would be updated "no later" than 13 December to allow all adults to book their top-up jabs and to reflect the change in guidance from the JCVI.
Dr Gary Howsam, vice chair of the Royal College of GPs, said "capacity needs to expand" in order to meet the target of offering all eligible people a booster jab by the end of January.
"These are sensible, temporary measures that will address some of the bureaucratic demands on practices and have minimal impact on the care patients receive in general practice, allowing GPs and our teams to focus their efforts where currently most clinically necessary," Dr Howsam said.
However, Dennis Reed, director of Silver Voices, a campaign group for older people, said NHS England's proposals were a "blatant case of age discrimination" that suggested "once you reach the age of 75 your health is of less importance than the rest of the population".
He said deferring checks for the early warning signs of illnesses such as strokes, cancers and diabetes was "counter-productive" as it would see patients "pushed out of primary care" and being treated in hospitals, which he said would not help with the burden on the NHS.
Dr Farah Jameel, the GP committee chair of the British Medical Association, said the measures would release GPs from "filling out paperwork" and chasing "unnecessary" and often "undeliverable" targets.
She told BBC Radio 4's Today programme: "We have been struggling with significant prevailing workforce pressures - backlog pressures, winter pressures, pandemic pressures."
Dr Jameel said the measures would allow staff to prioritise the most vulnerable patients and support the "national priority" to vaccinate people as quickly as possible.
She insisted patients who were unwell or had worrying symptoms would continue to receive care from their GPs.
Rachel Power, chief executive of the Patients Association, said pausing some regular GP services risked "building up future ill health" that would have been detected in routine checks and further disrupting the relationship between patients and the NHS.