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.
9. Bothal
There were 54 positive cases in Bothal ward where the rate is 1,187. Photo: Google
10. Morpeth Kirkhill
There were 62 positive cases in Morpeth Kirkhill where the rate is 1,179. Photo: Google
11. Cramlington North
There were 57 positive cases in Cramlington North where the rate is 1,167. Photo: Google
12. South Blyth
There were 60 positive cases in South Blyth where the rate is 1,159. Photo: Google