Data from Public Health England, published by Northumberland County Council, reveals there were 53 confirmed positive cases in the county in the week to May 10.
The infection rate per 100,000 is 16.55.
Here are the 10 areas of Northumberland with the highest rates.
1. Newsham
There were 19 positive cases in Blyth's Newsham ward where the rate is 376.5.
Photo: Google
2. Hexham West
There were 12 positive cases in Hexham West where the rate is 304.1.
Photo: Google
3. Cramlington West
There were 17 positive cases in Cramlington West where the rate is 302.1.
Photo: Google
4. Longhoughton
There were 13 positive cases in Longhoughton ward where the rate is 287.7.
Photo: Jane Coltman