1. Shenzhen Center for Disease Control and Prevention, Shenzhen, People’s Republic of China
2. State Key Discipline of Infectious Disease, National Clinical Research Center for infectious disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, People’s Republic of China
3. Guangdong Provincial Center for Disease Control and Prevention, Guangdong, People’s Republic of China
4. Shenzhen LongHua District Maternity and Child Healthcare Hospital, Shenzhen, People’s Republic of China
5. State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People’s Republic of China