Over 1.66 lakh antigen tests have been conducted in 445 COVID-19 containment zones, according to an official.
On June 29, the Union Home Ministry had said that the door-to-door survey would be done in containment zones on priority basis by July 6, followed by a similar exercise across the city.
The earlier deadline to complete the door-to-door survey in city's containment zones was June 30.
Under the new rules, authorities have to delineate the containment zones on a micro level, instead of big ones. BUN SNE