1. Clinical Laboratory Medicine Department The Second Affiliated Hospital of Guangzhou Medical University Guangzhou China
2. Department of Infectious Disease Dongguan Ninth People's Hospital Dongguan China
3. Department of Respiratory Dongguan Ninth People's Hospital Dongguan China
4. Department of Kidney Transplant The Second Affiliated Hospital of Guangzhou Medical University Guangzhou China
5. Clinical Laboratory Medicine Department Maoming People's Hospital Maoming China
6. Clinical Laboratory Medicine Department Dongguan Ninth People's Hospital Dongguan China
7. Hospital Infection‐Control Department The Second Affiliated Hospital of Guangzhou Medical University Guangzhou China
8. Department of Medical Examination The Second Affiliated Hospital of Guangzhou Medical University China
9. Immunization Planning Section Haizhu District Center for Disease Control and Prevention Guangzhou China