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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/15410


    Title: Epidemiology and analysis of SARS-CoV-2 Omicron subvariants BA.1 and 2 in Taiwan
    Authors: Liu, LT;Chiou, SS;Chen, PC;Chen, CH;Lin, PC;Tsai, CY;Chuang, WL;Hwang, SJ;Chong, IW;Tsai, JJ
    Contributors: National Mosquito-Borne Diseases Control Research Center;National Institute of Infectious Diseases and Vaccinology
    Abstract: The Omicron variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), first detected in October 2021, possessed many mutations compared to previous variants. We aimed to identify and analyze SARS-CoV-2 Omicron subvariants among coronavirus disease 2019 (COVID-19) patients between January 2022 and September 2022 in Taiwan. The results revealed that BA.2.3.7, featuring K97E and G1251V in the spike protein compared with BA.2, emerged in March 2022 and persistently dominated between April 2022 and August 2022, resulting in the largest COVID-19 outbreak since 2020. The accumulation of amino acid (AA) variations, mainly AA substitution, in the spike protein was accompanied by increasing severity in Omicron-related COVID-19 between April 2022 and January 2023. Older patients were more likely to have severe COVID-19, and comorbidity was a risk factor for COVID-19-related mortality. The accumulated case fatality rate (CFR) dropped drastically after Omicron variants, mainly BA.2.3.7, entered Taiwan after April 2022, and the CFR was 0.16% in Taiwan, which was lower than that worldwide (0.31%) between April 2021 and January 2023. The relatively low CFR in Omicron-related COVID-19 patients can be attributed to adjustments to public health policies, promotion of vaccination programs, effective antiviral drugs, and the lower severity of the Omicron variant.
    Date: 2023-10-03
    Relation: Scientific Reports. 2023 Oct 03;13:Article number 16583.
    Link to: http://dx.doi.org/10.1038/s41598-023-43357-7
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=2045-2322&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:001099945000024
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85173785046
    Appears in Collections:[陳俊宏] 期刊論文
    [其他] 期刊論文

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