Sponsored by the Health and Medical Research Fund (HMRF) under the Food and Health Bureau and fully supported by the Environment Bureau, a multidisciplinary team led by Professor Tong ZHANG of Department of Civil Engineering, the University of Hong Kong (HKU) has been conducting a research project since October 2020 for detecting SARS-CoV-2 in sewage and exploring the feasibility of establishing a sewage surveillance system in local communities, and providing supplementary information to safeguard public health in Hong Kong