He received his Ph.D. of Epidemiology at Peking Union Medical College and then finished several years of postdoctoral training at the Centers for Disease Control and Prevention (CDC) and Emory University. He has been working in the research field of infectious diseases for over 15 years. His research is on laboratory-based norovirus; and his strength is the combination of molecular biology, virology, and public health to understand disease from a broad perspective. Dr. Liu’s research interests include norovirus, molecular epidemiology, environmental epidemiology, diagnosis, and prevention. Clair Null