Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Pediatrics Shanghai Public Health Clinical Center of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Clinical Laboratory Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Xiamen Children’s Hospital Children’s Hospital of Fudan University Xiamen Branch Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Hematology Children’s Hospital of Fudan University Shanghai 201102 China;
Department of Infectious Diseases Children’s Hospital of Fudan University Shanghai 201102 China;
SARS-CoV-2 infection; Children; Epidemiology; Viral shedding; Seropositivity;