Test And Trace

Those told to isolate had a 3.7 to 4.0 relative risk of testing positive for coronavirus, according to a survey by the Zoe Covid Symptom Study app.

Alerts sent by the app have been falling for three consecutive weeks, signalling an easing of what had been labelled a 'pingdemic'.

The change will come into force from August 16 and applies to those who are double jabbed or aged under 18.