The Telegraph and Evening Standard reported on Friday that the UK surpassed Israel to become the second-most boosted nation against COVID-19, with 45% of its population having received three vaccine doses.
It is now behind Chile, where 52.7% of people have been triple-vaccinated.
Israel became the first country to tighten its vaccine passport system in October, requiring people to prove they've had a third shot to enter most indoor venues. The vaccine roll-out has slowed.
Almost half of the country's population has been administered a third dose. The nation is going to give a fourth dose to healthcare workers and people over the age of 60.
Prime Minister Boris Johnson announced an accelerated vaccination drive on December 13 as the number of COVID-19 case counts hit a record high. There were more than 122,000 cases in the UK on Christmas Eve. There were 137 deaths from the disease on the day.
Since the start of the Pandemic, UK carbon case numbers have increased.
The UK government.
The country's vaccine roll-out will continue over the holiday season as part of efforts to immunize eligible adults. Sky News reports that 200,000 appointments for a booster shot have been made over the Christmas and Boxing days.
The National Health Service says more than 30 million people have been administered third doses.
Sajid Javid, health and social care secretary, said in a statement this week that 30 million total boosters in the UK and more than one million total vaccines on one day was an absolutely fantastic achievement.
He said that every top-up jab in someone's arm means that the wall of defence against the Omicron variant is strengthened.
"This festive season, the single most important thing you can do is come forward for your life-saving booster jab."
A recent study from Imperial College, London suggests that people with the Omicron variant may have a milder illness than those with the Delta variant.