The first Omicron case has been found in an English primary for the first time.
Public health chiefs have urged for parents to get their children tested for Covid before they return to class.
The case was found at Manor Community Primary School in Swanscombe, Kent.
All year five students have been advised to stay home and get tested. Another year four class have also been strongly encouraged to get tested in case the new variant has spread, the Mirror reported.
Manor Community Primary School
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A mobile testing unit has also been set up at the school in Keary Road today.
Under current rules people who are in close contact of an infected person with Omicron must self-isolate for 10 days.
A spokesman for the school said: "The school has followed the national guidance and has written to the parents of all children who have been in close contact with the affected person.
"This testing is voluntary but parents have been strongly encouraged to comply, even if their children have recently had a negative PCR test.
"They have been advised to keep their children at home and self-isolate in line with government guidance."