As the number of Covid cases are on a rise in the national capital, Paediatric Pulmonologist at Delhi's Sir Ganga Ram Hospital, Dr Dhiren Gupta, said that there was no need to close public places as the immunity against the virus has been created amongst the general public. "We need to stay calm but cautious, there's no need to close schools and shopping malls as of now. We've almost created immunity against the virus. We should keep wearing masks," he said. (Video Credit: ANI)