Institution: | Beijing Institute of Microbiology and Epidemiology, Beijing, China (M.-J. Ma, W.-C. Cao); ;Wuxi Center for Disease Control and Prevention, Wuxi, China (G.-Y. Ma, S.-H. Chen, J. Bao, Y.-H. Qian, B. Lu, X. Ling); ;State Key Laboratory of Pathogen and Biosecurity, Beijing (X.-X. Yang, T. Zhao, J.-J. Zhou); ;School of Public Health, Central South University, Changsha, China (X.-X. Yang); ;Duke University Medical Center, Durham, North Carolina, USA (G.C. Gray) |