An estimated 20,000 Hongkongers have had undetected coronavirus infections, a relatively low figure which shows the city’s anti-pandemic measures are working, according to a new study. The year-long study launched in April 2020 by the Chinese University of Hong Kong (CUHK) tested 4,198 adults for Immunoglobulin G (IgG) antibody, a sign of previous infections, and […]
