Latest data from Public Health England reveals there were 3,099 new positive cases in the week to March 26.
The infection rate is 957.0 per 100,000 population – a figure last seen in mid-January.
Here are the 23 areas of Northumberland with the highest rates.
13. Morpeth North
There were 55 positive cases in Morpeth North where the rate is 1,154. Photo: Google
14. Cramlington South East
There were 50 positive cases in Cramlington South East where the rate is 1,099. Photo: Google
15. Blyth Cowpen
There were 49 positive cases in Blyth Cowpen where the rate is 1,091. Photo: Google
16. Amble West with Warkworth
There were 44 positive cases in Amble West with Warkworth where the rate is 1,091. Photo: Google