An area in Southend has gone from being virtually Covid free to recording the highest number of cases in south Essex in less than a week.
A total of 16 coronavirus cases were recorded in Leigh in the seven days up to March 30.
That was an increase of 14 from the week before and is by far the highest number of cases anywhere in the region.
It means the infection rate in Leigh is now 152.9 infections per 100,000 people.
By contrast, the average rate of infection in the UK is currently 47.6.
Only three areas marked in blue are recording infection rates above 100
Both Rochford Outer and Hawkwell East, and Rochford Town and Canewdon are the only other areas in south Essex recording infection rates above 100.