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 | 2021 Dec

REPOSITORIES: biostudies-literature