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Volume 29, Number 5—May 2023
Dispatch

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

Nguyen Thi Tam1, Nguyen To Anh1Comments to Author , Trinh Son Tung1, Pham Ngoc Thach, Nguyen Thanh Dung, Van Dinh Trang, Le Manh Hung, Trinh Cong Dien, Nghiem My Ngoc, Le Van Duyet, Phan Manh Cuong, Hoang Vu Mai Phuong, Pham Quang Thai, Nguyen Le Nhu Tung, Dinh Nguyen Huy Man, Nguyen Thanh Phong, Vo Minh Quang, Pham Thi Ngoc Thoa, Nguyen Thanh Truong, Tran Nguyen Phuong Thao, Dao Phuong Linh, Ngo Tan Tai, Ho The Bao, Vo Trong Vuong, Huynh Thi Kim Nhung, Phan Nu Dieu Hong, Le Thi Phuoc Hanh, Le Thanh Chung, Nguyen Thi Thanh Nhan, Ton That Thanh, Do Thai Hung, Huynh Kim Mai, Trinh Hoang Long, Nguyen Thu Trang, Nguyen Thi Hong Thuong, Nguyen Thi Thu Hong, Le Nguyen Truc Nhu, Nguyen Thi Han Ny, Cao Thu Thuy, Le Kim Thanh, Lam Anh Nguyet, Le Thi Quynh Mai, Tang Chi Thuong, Le Hong Nga, Tran Tan Thanh, Guy Thwaites, H. Rogier van Doorn, Nguyen Van Vinh Chau, Thomas Kesteman, Le Van TanComments to Author , and for the OUCRU COVID-19 Research Group2
Author affiliations: Oxford University Clinical Research Unit, Hanoi, Vietnam (N.T. Tam, T.S. Tung, N.T. Trang, N.T.H. Thuong, T. Kesteman, H. R. van Doorn); National Hospital for Tropical Diseases, Hanoi (P.N. Thach, V.D. Trang, L.V. Duyet, P.M. Cuong); Vietnam Military Medical University, Hanoi (T.C. Dien); National Institute of Hygiene and Epidemiology, Hanoi (H.V.M. Phuong, L.T.Q. Mai, P.Q. Thai); Hue National Hospital, Hue, Vietnam (P.N.D. Hong, L.T.P. Hanh); Da Nang Center for Disease Control, Da Nang, Vietnam (L.T. Chung, N.T.T. Nhan, T.T. Thanh); Pasteur Institute, Nha Trang, Khanh Hoa, Vietnam (D.T. Hung, H.K. Mai, T.H. Long); Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam (N.T. Anh, N.T.T. Hong, L.N.T. Nhu, N.T.H. Ny, T.T. Thanh, C.T. Thuy, L.K. Thanh, L.A. Nguyet, G. Thwaites, L.V. Tan); Hospital for Tropical Diseases, Ho Chi Minh City (N.T. Dung, L.M. Hung, N.L.N. Tung, D.N.H. Man, N.M. Ngoc, N.T. Phong, V.M. Quang, P.T.N. Thoa, N.T. Truong, T.N.P. Thao, D.P. Linh, N.T. Tam, H.T. Bao, V.T. Vuong, H.T.K. Nhung); Department of Health, Ho Chi Minh City, (N.V.V. Chau, T.C. Thuong); Ho Chi Minh City Center for Disease Control, Ho Chi Minh City (L.H. Nga); University of Oxford, Oxford, UK (H.R. van Doorn, G. Thwaites, L.V. Tan)

Main Article

Figure 3

Genetic diversity and distribution of SARS-CoV-2 AY.57 lineage during large nationwide outbreak of COVID-19, Vietnam, 2021. A) Bayesian skyride plot illustrating the relative genetic diversity of AY.57 lineage in Vietnam during 2021. Purple shading indicates 95% highest posterior density interval. B) Distribution of the number of AY.57 sequences used for analysis over the study period.

Figure 3. Genetic diversity and distribution of SARS-CoV-2 AY.57 lineage during large nationwide outbreak of COVID-19, Vietnam, 2021. A) Bayesian skyride plot illustrating the relative genetic diversity of AY.57 lineage in Vietnam during 2021. Purple shading indicates 95% highest posterior density interval. B) Distribution of the number of AY.57 sequences used for analysis over the study period.

Main Article

1These authors contributed equally to this article.

2Members of the working group are shown at the end of this article.

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