Covid-19 and quarantine measures in Hong Kong
b'8:30am-9:30am Covid-19 and quarantine measures in Hong Kong\\n\\n8:30am-9:30am: Benjamin Cowling (Upper in photo), Head of the Division of Epidemiology and Biostatistics, School of Public Health, University of Hong Kong\\n8:30am-9:30am: Samantha Gershon (Bot...'