As you will be aware, the government announced further preventative measures for the spread of Coronavirus yesterday. These included self-isolating if you have a high temperature or new continuous cough.
You can read the guidance here.
https://www.nhs.uk/conditions/coronavirus-covid-19/
Please follow this guidance from today in order to stop the spread of the illness to vulnerable people. Absenteeism for children who have been isolated because of these measures will be authorised.