Systematic sequencing of imported cases leads to detection of SARS-CoV-2 B.1.1.529 (Omicron) variant in central Viet Nam.

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  • Additional Information
    • Source:
      Publisher: World Health Organization, Regional Office for the Western Pacific Country of Publication: Philippines NLM ID: 101558993 Publication Model: eCollection Cited Medium: Internet ISSN: 2094-7313 (Electronic) Linking ISSN: 20947321 NLM ISO Abbreviation: Western Pac Surveill Response J Subsets: MEDLINE
    • Publication Information:
      Original Publication: Manila, Philippines : World Health Organization, Regional Office for the Western Pacific, c2010-
    • Subject Terms:
      COVID-19*; Humans ; SARS-CoV-2 ; Vietnam ; Health Personnel
    • Abstract:
      As authorities braced for the arrival of the Omicron variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), infrastructure investments and government directives prompted action in central Viet Nam to establish capacity for genomic surveillance sequencing. From 17 November 2021 to 7 January 2022, the Pasteur Institute in Nha Trang sequenced 162 specimens from 98 150 confirmed SARS-CoV-2 cases in the region collected from 8 November to 31 December 2021. Of these, all 127 domestic cases were identified as the B.1.617.2 (Delta) variant, whereas 92% (32/35) of imported cases were identified as the B.1.1.529 (Omicron) variant, all among international flight passengers. Patients were successfully isolated, enabling health-care workers to prepare for additional cases. Most (78%) of the 32 Omicron cases were fully vaccinated, suggesting continued importance of public health and social measures to control the spread of new variants.
      Competing Interests: The authors have no conflicts of interest to declare.
      ((c) 2022 The authors; licensee World Health Organization.)
    • References:
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    • Subject Terms:
      SARS-CoV-2 variants
    • Publication Date:
      Date Created: 20230223 Date Completed: 20230227 Latest Revision: 20230227
    • Publication Date:
      20230227
    • Accession Number:
      PMC9912268
    • Accession Number:
      10.5365/wpsar.2022.13.4.977
    • Accession Number:
      36817495