Chennai (Tamil Nadu):A total of 21.5 per cent of those who were tested as part of a serological survey in Chennai were found to have developed immunity against coronavirus, the Greater Chennai Corporation (GCC) said.
Samples of upwards of 12,000 people, who were selected at random, had been collected in July and tested as part of the test, which showed 21.5 per cent of people have developed immunity, GCC Commissioner Prakash said at a press conference here on Tuesday.
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The GCC Commissioner, however, urged people to follow the guidelines and SOPs for the disease, at least for the coming three months even after relaxations came into force, and to continue wearing face masks and avoid unnecessary travelling.