The ICMR has said that 80 per cent Covid-19 cases remain asymptomatic. ICMR chief Dr R Gangakhedkar said, "If 100 people have been infected by novel coronavirus, 80 of them will not exhibit any symptoms or mild symptoms of the disease." The total number of coronavirus cases in the national capital rose to 2081 on Monday, with 78 fresh cases and two deaths being reported in a day.