1. 1Department of Disease Control, Wuxi Center for Disease Control and Prevention, Wuxi, Jiangsu, China;
2. 2Department of Public Health, Health Supervision Institute of Xinwu District, Wuxi, Jiangsu, China;
3. 3Department of Microorganism Labs, Wuxi Center for Disease Control and Prevention, Wuxi, Jiangsu, China;
4. 4Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China;
5. 5Department of Infection Control, Shanghai Children’s Hospital, Shanghai Jiaotong University, Shanghai, China