As Singapore experiences a drastic spike in Covid-19 cases – which grew tenfold over March to hit 1,000 on April 1, then rose almost sixfold to 5,992 as of Saturday – the authorities are on alert to ensure the health care system can withstand this growing pressure.Experts such as infectious diseases specialist Leong Hoe Nam say hospitals can cope for now, but they are concerned about admissions outpacing the number of discharged patients.As of Saturday, there were 2,563 coronavirus patients in…