The Welsh government is to review whether children should wear face coverings in schools after Scottish pupils were told to wear masks in corridors.
Welsh health minister Vaughan Gething has asked a scientific advisory group to consider the current guidance for schools in Wales.
It follows new advice from the World Health Organisation, issued at the weekend, that said children aged 12 and over should wear masks.
And, just hours before Mr Gethings’s announcement, the Scottish Government revealed secondary school pupils in Scotland will have to wear face coverings when moving through corridors and other communal areas from next week.
All pupils over the age of five will also have to wear face masks on school buses in Scotland.
The developments will heap further pressure on Prime Minister Boris Johnson to change the guidance on face coverings in English schools.
Downing Street has said there are “no plans” to change the current advice in England, which states face masks are not recommended because pupils and staff are mixing in consistent groups.
And Mr Johnson stressed on Tuesday that “all of our scientific advice is that schools are safe”.
However, he opened the door to a possible future review of the guidance on face masks by adding: “We will look at changing medical evidence as we go on – if we need to change advice of course we will.”