Wen-Yi Zhang, Wei-Dong Guo1, Shan-Hua Sun1, Jia-Fu Jiang, Hai-Long Sun, Shen-Long Li, Wei Liu, and Wu-Chun Cao
Author affiliations: Author affiliations: People's Liberation Army Institute of Disease Control and Prevention, Beijing, People's Republic of China (W.-Y. Zhang, H.-L. Sun, S.-L. Li); Beijing Institute of Microbiology and Epidemiology, Beijing (W.-Y. Zhang, J.-F. Jiang, W. Liu, W.-C. Cao); Inner Mongolia Center for Disease Control and Prevention, Hohhot, People's Republic of China (W.-D. Guo); Chinese Center for Disease Control and Prevention, Beijing (S.-H. Sun)
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