Four nCoV variants have appeared in Vietnam 11
Covid-19 first appeared on December 31, 2019, in Wuhan city, Hubei province, central China.
After that, nCoV quickly spread to many countries around the world.
Variation from England
On the morning of January 2, the Ministry of Health announced the first case of infection with the British variant in Vietnam as `patient 1435`.
The patient was simultaneously infected with the British variant nCoV strain VOC 202012/01 and the D614G mutation, another strain from the original Wuhan strain of nCoV.
The British variant was first discovered in Kent, southeast England, in September 2020, including many variants.
The epidemic from the end of January until now in Hai Duong and Quang Ninh, the source of infection is unknown but is all due to the British strain of nCoV, Minister of Health Nguyen Thanh Long affirmed at the Government’s online meeting with 63 provinces and cities on the situation.
Doctor Nguyen Trung Cap, Deputy Director of the Central Tropical Diseases Hospital, said the new variant is transmitted through the air, including through aerosols and nuclear droplets.
By monitoring the disease progression of 165 Covid-19 patients at Field Hospital No. 1 in Chi Linh city, Hai Duong, doctor Cap commented that it `seems` that the British variant causes lung damage earlier than the previous stage.
According to Dr. Le Quoc Hung, Head of the Department of Tropical Diseases, Cho Ray Hospital, new research shows that the British strain increases its virulence by about 30% and is 70% more infectious than the old strain.
In Ho Chi Minh City, `patient 1660`, 28 years old, from Hai Duong, after having his gene sequenced at the Hospital for Tropical Diseases, was also found to be infected with the British variant.
Simulating nCoV with protein spikes.
South African Variation
On the morning of January 31, the Central Institute of Hygiene and Epidemiology announced the results of gene sequencing of `patient 1442`, 25 years old, South African nationality, infected with a new nCoV variant from South Africa.
The South African variant (501.V2 or B.1.351) was first detected in the Nelson Mandela Bay area in October. Some studies indicate that it has been present and circulating since August, then
World scientists consider the nCoV variant in South Africa to be more worrying than the nCoV variant from the UK because it spreads quickly and can evade vaccines.
Variation Rwanda, Africa
On January 12, the Ho Chi Minh City Center for Disease Control (HCDC) announced the results of gene sequencing of the nasopharyngeal fluid sample `patient 1979` and two patients from the loading and unloading team at Tan Son Nhat airport showing that they belong to
The study was conducted by Ho Chi Minh City Tropical Diseases Hospital in collaboration with Oxford University Clinical Research Unit (OUCRU).
Through analysis, the three patient’s genomes are more than 99.95% similar.
This strain is the first in Vietnam and Southeast Asia.
The nCoV strain of group A.23.1 was first discovered in Rwanda, Africa around the end of the third week of October 2020.
In addition, the epidemic in Da Nang, which started at the end of July, the World Health Organization (WHO) said, the nCoV strain discovered in Da Nang is similar to strains circulating in many countries.
At that time, the most widespread nCoV mutation in the world was called D614G.
Analysis at the end of July 2020 showed that the D614G strain existed in more than 70% of confirmed cases worldwide, nearly 100% in Europe.
As of February 12, Vietnam recorded 2,140 cases of nCoV infection.
