Latest data from Northumberland County Council, published by Public Health England, reveals there were 1,762 positive cases in the week to October 18.
The infection rate for the same period is 544.1 per 100,000 population.
There were 318 positive cases recorded on October 18, the highest daily figure since July 19.
Here are the 15 areas of Northumberland with the highest rates.
There were 54 positive cases in Bothal ward where the rate is 1,187 per 100,000 population.
2. Stocksfield and Broomhaugh
There were 45 positive cases in Stocksfield and Broomhaugh where the rate is 928.
3. Bedlington East
There were 38 positive cases in Bedlington East where the rate is 810.
There were 41 positive cases in Pegswood ward where the rate is 800.