That means Harlow currently has an infection rate of 225.1 cases per 100,000 population, dropping from just 151.6 cases per 100,000 population last week.
It’s the biggest rise in the country, but when the nationwide lockdown ends next Wednesday (December 2), it will only head towards a Level 2 lockdown with the rest of the county.
An area with similar elevation to Harlow is Medway in Kent, which is being moved to Level 3.
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The lockdown status of each area will be reviewed every 14 days by the government.
If cases continue to climb in Harlow, this risks being placed at level 3.
It is possible that the city will be placed at level 3 and the rest of the county will be left at level 2.
Something similar happened in Berkshire, where Slough was placed at level 3, but the rest of Berkshire remained at the lower level, although Slough is a unitary authority, while Harlow reports to the County Council of Essex.
It is possible that all of Essex, with the exception of Thurrock and Southend, which are governed by unitary authorities, could be treated as one for the multilevel system.
Only three regions of the country are currently in Tier 1: Cornwall, the Isle of Wight and the Isles of Scilly.
However, Tendring and Maldon in Essex have some of the lowest infection rates in the country.
Currently, the most infected areas in Essex are Basildon, Epping Forest and Thurrock.