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- Title
Systematic sequencing of imported cases leads to detection of SARS-CoV-2 B.1.1.529 (Omicron) variant in central Viet Nam.
- Authors
Do Thai Hung; Nguyen Bao Trieu; Do Thi Thu Thuy; Allison Olmsted; Trinh Hoang Long; Nguyen Duc Duy; Huynh Kim Mai; Bui Thi Thu Hien; Nguyen Van Van; Tran Van Kiem; Vo Thi Thuy Trang; Nguyen Truong Duy; Ton That Thanh; Huynh Van Dong; Gould, Philip; Moore, Matthew
- 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.
- Subjects
VIETNAM; SARS-CoV-2; SARS-CoV-2 Omicron variant; SARS-CoV-2 Delta variant
- Publication
Western Pacific Surveillance & Response Journal, 2022, Vol 13, Issue 4, p1
- ISSN
2094-7321
- Publication type
Article
- DOI
10.5365/wpsar.2022.13.4.977