Nearly 90% of people in Mumbai, is estimated to have Covid-19 antibodies, according to the civic body survey released on Friday. The fifth blood serum survey which tests for antibodies, known as a sero survey conducted between August and early September included 8,674 adults out of which almost 65% of the subjects were vaccinated.

from Times of India https://timesofindia.indiatimes.com/india/almost-90-of-people-in-mumbai-have-covid-19-antibodies-survey/articleshow/86294794.cms