France could see 100,000 new covid cases a day because of the spread of the Omicron variant.
Therefore, the government vaccine advisers recommend the booster jab for 16 and 17-year-olds.
The JCVI also say vulnerable primary school children should be offered a low-dose jab.
Meanwhile, UK authorities recorded 968,665 booster and third doses on Tuesday.
Wales has followed Scotland in announcing post-Christmas Covid restrictions.
Auhtorities allow maximum of six people to meet in pubs, cinemas and restaurants and 2m social distancing will return.
And Stormont ministers will meet later today to discuss possible measures in Northern Ireland.
However, Boris Johnson has not ruled out new Covid restrictions in England after Christmas
Meanwhile, EU nations including Germany and Portugal have announced post-Christmas restrictions as Omicron cases rise.
Earlier, Wales’ health minister said they are expecting a significant wave of Omicron that will peak in January.
Scientists believe Omicron could spread more easily than Delta. It could out-compete Delta to become the dominant variant in the UK.
But much is still unknown, and it could still take weeks to understand how severe illness from the variant is and what it means for the effectiveness of vaccines.
The World Health Organisation (WHO) warned in a new press statements about the Covid-19 surge in Europe.
