Duke-NUS Medical School has come up with a Covid-19 test kit that is the first of its kind. It takes just one hour, instead of several days, to detect if someone has been infected before. Research team leader Prof Wang Linfa shares more. Acumen Research Laboratories' Dr Ong Siew Hwa breaks down the Covid-19 testing process and discusses how labs ensure accurate results. View Singapore from above as The Straits Times captures the city at a standstill.