Almost a week after two nurses at the civic-run Sir D M Petit Hospital in Vasai tested positive for COVID-19 and the premises was sealed, swabs of 160 staffers were collected and all of them quarantined at different facilities on Thursday.

The positive reports had triggered a lot of panic among the other staff members of the hospital as they had worked closely with the two nurses who contracted the viral infection. The two nurses have been kept in an isolation ward at Riddhi Vinayak Hospital in Nalasopara West.

Requesting anonymity, a nurse said, "After both the nurses were found to be positive for COVID-19, the authorities had ordered to collect the samples of only 40 staff members and others were asked to wait. Earlier, we were told that after receiving the 40 reports they would decide whether the rest needed to undergo tests."