Professor SS Lee graduated from the Medical School of The University Hong Kong in 1982 and received his MD degree from the same university in 1995. After graduation, he underwent training in internal medicine, developed keen interest in clinical immunology and thereafter HIV/AIDS. In 1991, he was appointed head of the newly established Department of Health Special Preventive Programme for AIDS and viral hepatitis. In 2005, he joined The Chinese University of Hong Kong as Chair Professor in Infectious Diseases, and is currently staff member of the Stanley Ho Centre for Emerging Infectious Diseases. He is currently a fellow with professional institutions in internal medicine, pathology and public health; and Editor-in-Chief of International Journal of Infectious Diseases.

Professor Lee conducts teaching in clinical and public health HIV medicine at undergraduate and postgraduate levels. His major areas of research interest include biomedical approach to HIV prevention, infectious disease epidemiology, emerging infectious diseases. He has, on different occasion, served as consultant to national and international organizations in the evaluation of HIV programmes.