COvidity cases in schools in England rose 70% in the week to June 20, according to reports.
Government figures show that the number of children between the ages of five and nine testing positive for Covid-19 has increased dramatically, with most testing positive for the Delta variant, according to the Times.
There was also a 56% jump among children aged 10 to 14.
More than 16,100 students were absent from school with a suspected case of Covid in the third week of June, up from 10,600 seven days earlier, the newspaper reported.
The rise in cases comes as parents try to readjust to normal life after months of home schooling during the lockdown.
Kevin Courtney, deputy general secretary of the National Education Union, told The Times there was “every chance that many more children will self-isolate” as cases are expected to continue to rise in July.
On Saturday, another 18,270 cases of Covid were reported in the UK – the highest daily number since February 5.
23 other deaths have also been reported. As of Saturday, there were 10,321 new infections and 14 deaths.
It comes as the government ramps up efforts to vaccinate as many people as possible ahead of the planned easing of restrictions on July 19.