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.
5. Hexham East
There were 22 positive cases in Hexham East where the rate is 480.7.
6. Hexham Central with Acomb
There were 20 positive cases in Hexham Central with Acomb where the rate is 443.7.
7. Ashington Central
There were 22 positive cases in Ashington Central where the rate is 440.2.
8. Druridge Bay
There were 27 positive cases in Druridge Bay ward where the rate is 413.8.