Systematic sequencing of imported cases leads to detection of SARS-CoV-2 B.1.1.529 (Omicron) variant in central Viet Nam
- Author:
Do Thai Hung
1
;
Nguyen Bao Trieu
1
;
Do Thi Thu Thuy
2
;
Allison Olmsted
2
;
Trinh Hoang Long
1
;
Nguyen Duc Duy
1
;
Huynh Kim Mai
1
;
Bui Thi Thu Hien
2
;
Nguyen Van Van
3
;
Tran Van Kiem
4
;
Vo Thi Thuy Trang
4
;
Nguyen Truong Duy
4
;
Ton That Thanh
5
;
Huynh Van Dong
6
;
Philip L Gould
2
;
Matthew R Moore
2
Author Information
- Publication Type:Journal Article
- Keywords: SARS-CoV-2, public health surveillance, whole genome sequencing, imported infectious diseases, Vietnam
- From: Western Pacific Surveillance and Response 2022;13(4):82-85
- CountryWHO-WPRO
- Language:English
- 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.
- Full text:2024061714014063511wpsar-13-977.pdf
