Ryu, Sukhyun
Ali, Sheikh Taslim
Noh, Eunbi
Kim, Dasom
Lau, Eric H. Y.
Cowling, Benjamin J.
Article History
Received: 27 January 2021
Accepted: 17 May 2021
First Online: 26 May 2021
Declarations
:
: This study did not require institutional review board approval or informed consent, because all data used were anonymous and publicly available on local public health agency websites.
: Not applicable.
: BJC reports honoraria from Sanofi Pasteur and Roche. All other authors declare no competing interests.