Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Korea Disease Control and Prevention Agency - Division of Infectious Disease Response, Hallym University - College of Medicine, Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Korea Disease Control and Prevention Agency - Division of Infectious Disease Response, Korea Disease Control and Prevention Agency - Division of Viral Diseases, Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Korea Disease Control and Prevention Agency, Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC), Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC) and Government of the Republic of Korea - Korea Centers for Disease Control and Prevention (KCDC)