Browsing by Subject "Omicron"

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    International risk of SARS-CoV-2 Omicron variant importations originating in South Africa
    (2021-12) Bai, Yuan; Du, Zhanwei; Xu, Mingda; Wang, Lin; Wu, Peng; Lau, Eric H.Y.; Cowling, Benjamin J.; Meyers, Lauren Ancel
    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.
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    The risk of SARS-CoV-2 Omicron variant emergence in low and middle-income countries (LMICs)
    (2022-01) Bi, Kaiming; Herrera-Diestra, Jose; Bai, Yuan; Du, Zhanwei; Wang, Lin; Gibson, Graham; Johnson-León, Maureen; Fox, Spencer J.; Meyers, Lauren Ancel
    We estimated the probability of undetected emergence of the SARS-CoV-2 Omicron variant in 25 low and middle-income countries (LMICs) prior to December 5, 2021. In nine countries, the risk exceeds 50%; in Turkey, Pakistan and the Philippines, it exceeds 99%. Risks are generally lower in the Americas than Europe or Asia.