The latest data shows that the case rate in the city on Thursday, October 28 was 472.3 - down from 657.4 the previous week.
Health chiefs in Peterborough have said schools are one of the biggest spreaders of COVID in the community - but now the spread was starting to reach older and more vulnerable residents.
In the seven days up to October 28, there were 957 cases in Peterborough - down by 375 from the previous week.
Of the 22 areas in the city, 18 saw a drop, with one area recording the same number of cases as the previous week. Three areas saw a small increase.
As part of the ERA status, residents are being urged to get vaccinated. For more information on when and where you can get the vaccine, visit https://www.thevaccinators.co.uk/
All data available at https://coronavirus.data.gov.uk/