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- Yuan Bai, Zhanwei Du, Mingda Xu, Lin Wang, Peng Wu, LauEric H YEHYWHO Collaborating Center for Infectious Disease Epidemiology and Control, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, 999077, China.Laboratory of Data Discovery for Health Limited, Hong Kong , Benjamin J Cowling, and Lauren Ancel Meyers.
- WHO Collaborating Center for Infectious Disease Epidemiology and Control, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, 999077, China.
- J Travel Med. 2022 Sep 17; 29 (6).
AbstractOmicron, a fast-spreading SARS-CoV-2 variant of concern reported to the World Health Organization on 24 November 2021, has raised international alarm. We estimated there is at least 50% chance that Omicron had been introduced by travellers from South Africa into 11 of the 14 countries studied by 28 November 2021.
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