1. State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Fengtai District, Beijing, China.
2. Department of Disinfection and Vector Control, Jiangsu Provincial Center for Disease Control and Prevention, Gulou District, Nanjing, China.
3. Zhejiang Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Hangzhou, China.