Ambattur alone has 16 containment zones, the highest in the city, the data further said. It may be noted that the locality did not have any containment zones on Sunday.
Valasaravakkam, along with Ambattur and Adyar zones, has the maximum number of active cases as on Sunday, each zone having 15% active cases out of the total reported Covid 19 cases.
The Corporation zones which are free of containment zones are Thiruvottriyur, Manali, Madhavaram, Tondiarpet, Royapuram, Alandur, Adyar, Perungudi and Sholinganallur
As recently as June 15, the city had 369 containment zones with Royapuram having the most at 78. Now, the containment zones have drastically reduced, with the city having only 61 totally.
Tondiarpet has the most active containment zones with 24, while Kodambakkam has 15.
As per the data, Royapuram alone has eight hotspots which have been active for more than a month. Officials said that containing the spread in the slums here is a huge challenge.
According to corporation data, 897 containment zones have been taken off the list so far. This means these zones did not record any COVID-19 case for the past 28 days.
Dr Radhakrishnan said that the containment zones could be partially relaxed on a case-by-case basis, especially in places where there are apartment complexes and gated communities.
Nine of the 15 zones in the city have containment zones in single digits. Manali only has 1 containment zone, while Sholinganallur and Alandur have two each.