Of the 508 positive cases on May 5, a large number were linked to the wholesale market. Since the beginning of the week, Chennai’s wholesale fruit and vegetable market, Koyembedu, has been shut as it was found to be a Covid-19 hotspot officials fear that the number of people who will need to be tracked may well be more than those associated with the religious conference. In all, 1480 attendees and their contacts were traced and tested. Health workers conducted door-to-door surveillance of the attendees’ families across several districts and authorities were instructed to cordon off a radius of 7-8 km around the attendees’ homes. By April 1, the state had rolled out a detailed plan to track the attendees, their family members, and their primary contacts to test them for Covid-19. Though the first case in the city was reported on March 7, TN created a containment zone plan after a religious conference of the Tablighi Jamaat held in New Delhi in mid-March was declared a hotspot. Krishnagiri, which was a green zone, was redesignated an orange zone after one positive case was reported on Wednesday. As of May 5, Tamil Nadu has 12 districts are in the red zone, while 25 are in the orange zone. Red zones or hotspot districts are demarcated on the basis of active cases green zones are districts with either zero confirmed cases till date or no confirmed case in the last 21 days while the orange zones are districts that are neither red nor green. We are working to ensure groceries and vegetables are supplied every day outside the barricades,” said the official.įurthermore, zonal classification of districts are based on hotspot analysis set down by the Centre. Movement is severely restricted for emergency cases only. ![]() “We have registers outside containment zones which records how many people come in and go out every day. First, the person who tested positive is taken to hospital, then all his family and direct contacts are traced, tested and quarantined and third, in consultation with the police, the area is cordoned off. The transformation from a neighbourhood into a containment zone is swift. Now, on average, each containment zone monitors 150 families. It made more sense to define a more compact containment zone and enforce containment of a smaller group of families,” the official said. If we close down a large area, then it will be impossible to monitor. “Then we realised that this is counterproductive. Drones with speakers flew overhead to check if people were congregating on roof tops and to make announcements. ![]() “Initially our containment zones were defined in a very expansive manner,” said a senior official. ![]() The first containment zone in North Chennai came up as early as April 2 after which the corporation has been learning on the job, officials said. It is when the virus was next door that fear and anxiety gripped the area,” she said. “After that these tin sheets came up overnight. “Last week there was a positive case discovered 2-3 houses down the street above the neighbourhood supermarket,” the 21-year-old told HT. Her lane is one of 357 containment zones in the city and 711 in Tamil Nadu’s 36 districts. Tin sheets cordon off both ends of the West Madha Church street in North Chennai’s Royapuram, where a social work graduate student lives with her parents.
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