Interacting with reporters, he also said, the next survey will be conducted from August 1-5.
"The results of the sero-survey conducted from June 27-July 5 came out yesterday, and it shows that nearly one-fourth of people had developed antibodies, meaning they had got infected and recovered. Most of these people who were sampled did not know that they were infected earlier," Jain told reporters.
The Delhi government
has now decided to conduct more monthly sero-surveys to find greater percentage of such people who had got infected and recovered, so as to formulate better policies for tackling Covid-19, he said.
On a query that there were reports of some people trying to indulge in monetary transactions for convalescent plasma, Jain warned that "strict action" will be taken if anyone tries to buy or sell plasma.