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.
5. Ponteland North
There were 69 positive cases in Ponteland North where the rate is 1,386. Photo: Google
6. Pegswood
There were 63 positive cases in Pegswood ward where the rate is 1,230. Photo: Google
7. Prudhoe South
There were 68 positive cases in Prudhoe South where the rate is 1,208. Photo: Google
8. Haydon
There were 53 positive cases in Ashington's Haydon ward where the rate is 1,193. Photo: Google