Data from Northumberland County Council, published by Public Health England, reveals there were 864 positive cases in the week to August 30.
The infection rate is 266.8 positive cases per 100,000 population – down from 289.67 on August 23.
Here are the 23 areas of Northumberland with the highest rates.
1. Ponteland West
There were 71 positive cases in Ponteland West where the rate is 1,757.
2. Cramlington West
There were 81 positive cases in Cramlington West where the rate is 1.439.
3. Seaton with Newbiggin West
There were 74 positive cases in Seaton with Newbiggin West where the rate is 1,424.
There were 63 positive cases in Lynemouth ward where the rate is 1,404.