A cluster of severe acute respiratory syndrome coronavirus 2 infections in Danang, Vietnam, began July 25, 2020, and resulted in 551 confirmed cases and 35 deaths as of February 2021. We analyzed 26 sequences from this cluster and identified a novel shared mutation in nonstructural protein 9, suggesting a single introduction into Vietnam.
Phuong HVM, Tung TS, Trang UTH, Hang NLK, Son NV, Hien PT, Thanh LT, Cuong VD, Thanh TT, Nhan NTT, Duong TN, Nghia ND, Tu TA, Choisy M, Rabaa MA, Rogier van Doorn H, Anh DD, Mai LQ. (2021). Novel Mutation of SARS-CoV-2, Vietnam, July 2020. Emerging infectious diseases, 27(5)