The number of people testing positive in England has risen by almost a fifth over the past week.
A total of 191,771 people tested positive at least once between September 15 and 22, up from 162,400 the previous week, Test and Trace figures show.
It marks the biggest increase since mid-July when England saw a major spike in Covid cases after lockdown was lifted and international travel reopened.
Test and Trace recorded 309.422 positive cases between July 14 and 21, with the removal of all Covid restrictions on the 19.
The latest numbers are still well below the level reached during the second wave of the virus - from the end of 2020 into the new year - which peaked at 390,280 cases in the week to January 6.
Those who test positive for Covid, be it through a lateral flow or PCR test, are transferred to Test and Trace with the service tracking down and notifying those who they have had recent contact with.
In the most recent week leading up to September 22, 10.9% of positive cases (18,131 out of 166, 797) were not reached, and so were unable to provide details of recent close contacts.
This is down from 11.7% the previous week.
Prime Minister Boris Johnson said in June last year that results of all in-person testing would be given within a day, save for “difficulties with postal tests or insuperable problems like that".
Test and Trace figures also show 75% of people who were tested at a regional, local or mobile site in the week up to September 22 received their results within 24 hours.
This is down from 87.3% the previous week, and the lowest since the week leading up to July 21.
