Delhi Health Minister Satyendar Jain spoke on Covid situation in Delhi.
He said that Covid antibodies were found in 24% of those surveyed for sero surveillance.
"Most of these people were not aware that they had infection," he added.
Jain informed that the Delhi government has decided to conduct sero surveillance every month.
"Sero surveillance will be done from 1st till 5th of every month," he said.
