MUMBAI: BMC is likely to release on Monday findings of the second sero survey report for Covid-19 conducted in three wards of the city.
The second survey was conducted in the second fortnight of August and was completed during Ganpati festival. The surveys are done by BMC along with NITI Aayog and Tata Institute of Fundamental Research (TIFR), Colaba.
The first serological survey in July was conducted in the same wards of M West (Chembur), F North (Matunga, Sion and Wadala) and R North (Dahisar). The first survey showed that almost 57% of the people living in slum pockets in these areas had developed antibodies, while the corresponding number for non-slum areas was 16%.
It is learnt that TIFR has submitted its analysis to BMC, and its scientists will meet with BMC health officials on Monday afternoon for a discussion. “The report may be released soon thereafter or on Tuesday,” said a BMC official.
The second sero survey holds significance because of the worldwide debate about decay in Covid antibodies over a three-month period. Around 10,000-odd samples were collected for analysis from slums and non-slum areas in the three wards.
However, a senior BMC official on Saturday said positive cases in the last one month have been coming from non-slum areas. “It is clear that as lockdown was relaxed and people started mingling, the spread has been occurring in housing colonies,’’ he said. It is estimated that herd immunity can be achieved if up to 70% of the population is exposed to the virus and develop antibodies.

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