Half of all 16 and 17-year-olds have already got their Covid vaccine, NHS England revealed today.
Latest figures showed 620,000 teenagers in the age group are registered as having received one dose.
It comes less than a month after the JCVI — which is advising Britain's roll out — recommended they were inoculated.
Officials said appetite for jabs among young people had been 'strong' since the drive began at the start of August.
Separate data from Public Health England (PHE) showed vaccines have already prevented 140,000 hospitalisations across the country.Insurance Loans Mortgage Attorney Credit Lawyer
The agency's weekly report highlights just how well vaccines are already working at preventing serious disease and death, amid mounting calls for a booster programme to be launched.
Experts are warning England faces a third wave of infections as schools return this week and next. No10's top scientists are still deliberating on whether to roll out jabs to 12 to 15-year-olds.
This graph shows the number of first doses dished out by age group. The NHS does not split age groups into individual units. It shows more than 620,000 have already been inoculated among under-18s
The above graph from the PHE report shows vaccine uptake by age group as a percentage of that age group. It reveals an uptick among under-18s
More than 140,000 hospital admissions in England are estimated to have been prevented by the vaccine rollout.
The latest estimate of 143,600 is a sharp rise on the previous one of more than 82,100.
The new figures, from Public Health England (PHE), have been hailed as showing the 'vital role' vaccines play in preventing severe disease.
The organisation said approximately 36,100 admissions were estimated to have been prevented in those aged 65 to 74, while for 75 to 84-year-olds the figure was 58,800, and it was 48,700 in those aged 85 and over.Insurance Loans Mortgage Attorney Credit Lawyer
Estimates for the number of deaths in England directly averted by the vaccine rollout are unchanged at between 102,500 and 109,500.
Dr Jamie Lopez Bernal, consultant epidemiologist at PHE, said: 'These figures show the vital role that vaccines play in preventing hospitalisations and, in turn, reducing the pressure on the NHS.
'The vaccine helps protect you and those around you. To gain maximum protection, it is important that you get 2 doses of the vaccine.'
Health Secretary Sajid Javid said a 'wall of defence' is being built with every dose given.
He said: 'Jab by jab we are building a wall of defence that has already saved more than 105,000 lives and prevented 143,000 hospitalisations in England alone.
'Do not delay – please come forward and get both of your vaccines as soon as you can.'
NHS England figures also revealed almost two-thirds of this age group have already been inoculated in Wales.
In Scotland half have got their first doses, while in Northern Ireland 40 per cent have come forward for their jab.