Zhejiang University, Zhejiang University, Zhejiang University, Zhejiang University, Zhejiang University, Zhejiang University, Zhejiang University - School of Public Health, Zhejiang University, Zhejiang University, Zhejiang University, Zhejiang University, Zhejiang University, Zhejiang University, National Healthcare Security Administration (NHSA), Zhejiang University and Zhejiang University - State Key Laboratory for Diagnosis and Treatment of Infectious Diseases