Findings of the first round of sero-survey indicated that the spread of novel Coronavirus is significantly higher in the slums, where more than 50 per cent of the infected people developed antibodies, as compared to the residential areas.

The BMC collected samples from 6,936 people of the R North (Dahisar), M West (Chembur) and F North (Matunga) wards, and tested them for the presence of the neutralising antibodies in the blood to determine whether they have been infected and recovered from COVID-19.