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Role of presymptomatic transmission of COVID-19: evidence from Beijing, China
- Correspondence to Quanyi Wang, Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control (CDC), No.16 He Pingli Middle Street, Dongcheng District, Beijing 100013, China; bjcdcxm{at}126.com
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Role of presymptomatic transmission of COVID-19: evidence from Beijing, China
Publication history
- Received May 23, 2020
- Revised July 21, 2020
- Accepted July 28, 2020
- First published August 27, 2020.
Online issue publication
December 10, 2020
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- Previous version (27 August 2020).
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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. http://creativecommons.org/licenses/by-nc/4.0/This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.