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International risk of SARS-CoV-2 Omicron variant importations originating in South Africa.

ABSTRACT: 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.

SUBMITTER: Bai Y

PROVIDER: S-EPMC8669863 | biostudies-literature |

REPOSITORIES: biostudies-literature

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