The analysis results of the gene sequence of the SARS-CoV-2 virus circulating in Hai Duong and Quang Ninh on 2nd February showed that the virus has the origin from the UK (which appeared in December 2020 and has spread to over 60 countries and territories).
The SARS-CoV-2 virus in the specimen taken from the patient who returned from Japan and quarantined at Regiment 125 (Chi Linh), belongs to the group popularly circulating in Brazil, Argentina, Nigeria at the same time. This group of viruses is not in the same group with the viruses circulating in Hai Duong and Quang Ninh.
This analysis was based on a total of 37 specimens taken from Covid-19 cases in Quang Ninh and Hai Duong with good signals (the sequence is from 95-100% of the genome). Of which, 25 specimens are from Hai Duong and 12 specimens from Quang Ninh. In Hai Duong, there are 19 specimens taken from the workers of POYUN Electronics Vietnam Co., Ltd., 4 specimens taken from the community residents, 1 specimen from a patient in the field hospital at Chi Linh City Medical Center and 1 specimen taken from the patient who returned from Japan and quarantined at Regiment 125 (Chi Linh).