Latest data from Public Health England, published by Northumberland County Council, reveals the county-wide infection rate was 361 positive cases per 100,000 on January 3.
This compares to 184.2 positive cases per 100,000 on December 27.
There were 1,158 positive cases in the seven days up to January 3.
Here are the 19 wards with the highest case numbers.
There were 1,158 positive cases in the seven days up to January 3.
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