Latest data from Public Health England, published by Northumberland County Council, reveals there were 100 positive cases recorded on June 21.
There were 446 positive cases recorded in the week to June 21 and the infection rate for the same period was 139.3 positive cases per 100,000 population.
Here are the 19 areas of Northumberland with the highest rates.
9. Amble West with Warkworth
There were none positive cases in Amble West with Warkworth where the rate is 223.1.
There were 10 positive cases in Blyth's Cowpen ward where the rate is 222.7.
11. Bedlington Central
There were 12 positive cases in Bedlington Central where the rate is 228.1.
12. Ponteland North
There were 11 positive cases in Ponteland North where the rate is 221.0.