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Spatiotemporal Evolution of SARS-CoV-2 Alpha and Delta Variants during Large Nationwide Outbreak of COVID-19, Vietnam, 2021.

Tam, Nguyen Thi; Anh, Nguyen To; Tung, Trinh Son; Thach, Pham Ngoc; Dung, Nguyen Thanh; Trang, Van Dinh; Hung, Le Manh; Dien, Trinh Cong; Ngoc, Nghiem My; Van Duyet, Le; Cuong, Phan Manh; Phuong, Hoang Vu Mai; Thai, Pham Quang; Tung, Nguyen Le Nhu; Man, Dinh Nguyen Huy; Phong, Nguyen Thanh; Quang, Vo Minh; Thoa, Pham Thi Ngoc; Truong, Nguyen Thanh; Thao, Tran Nguyen Phuong; Linh, Dao Phuong; Tai, Ngo Tan; Bao, Ho The; Vuong, Vo Trong; Nhung, Huynh Thi Kim; Hong, Phan Nu Dieu; Hanh, Le Thi Phuoc; Chung, Le Thanh; Nhan, Nguyen Thi Thanh; Thanh, Ton That; Hung, Do Thai; Mai, Huynh Kim; Long, Trinh Hoang; Trang, Nguyen Thu; Thuong, Nguyen Thi Hong; Hong, Nguyen Thi Thu; Nhu, Le Nguyen Truc; Ny, Nguyen Thi Han; Thuy, Cao Thu; Thanh, Le Kim; Nguyet, Lam Anh; Mai, Le Thi Quynh; Thuong, Tang Chi; Nga, Le Hong; Thanh, Tran Tan; Thwaites, Guy; Rogier van Doorn, H; Chau, Nguyen Van Vinh; Kesteman, Thomas; Van Tan, Le.

Emerg Infect Dis ; 29(5): 1002-1006, 2023 05.

Article in English | MEDLINE | ID: mdl-37015283

ABSTRACT

We analyzed 1,303 SARS-CoV-2 whole-genome sequences from Vietnam, and found the Alpha and Delta variants were responsible for a large nationwide outbreak of COVID-19 in 2021. The Delta variant was confined to the AY.57 lineage and caused >1.7 million infections and >32,000 deaths. Viral transmission was strongly affected by nonpharmaceutical interventions.

Subject(s)

COVID-19 , Humans , COVID-19/epidemiology , SARS-CoV-2/genetics , Vietnam/epidemiology , Disease Outbreaks

ABSTRACT

Subject(s)

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