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International risk of SARS-CoV-2 Omicron variant importations originating in South Africa (preprint)
medrxiv; 2021.
Preprint
Dans Anglais
| medRxiv | ID: ppzbmed-10.1101.2021.12.07.21267410
Résumé
Omicron, a fast-spreading SARS-CoV-2 variant of concern reported to the World Health Organization on November 24, 2021, has raised international alarm. We estimated there is at least 50% chance that Omicron had been introduced by travelers from South Africa into all of the 30 countries studied by November 27, 2021.