February 14th local time, several institutions and universities in the United States released an article entitled “The emergence of multiple protein variants of SARS-CoV-2 that affect amino acid No. 677 at the end of 2020” (
2020 late SARS-CoV-2 spike protein variants of multiple lines emerge that are affecting amino aci d position677) academic paper.
Researchers say they have found seven strains of COVID-19 in the United States, with the same genetic letter mutation.
The study said that the seven variants have been found throughout the United States, but it is not yet possible to determine whether these variants are more infectious.
Researchers say they have discovered these new strains of COVID-19 in the process of gene sequencing the novel coronavirus.
They worry that new variants may make it easier for the virus to enter human cells.
According to the study, the coronavirus variant found in many southern states in the United States can be traced back to October 2020, but the exact time and location of the mutation is still unknown.
With less than 1% of COVID-19 samples currently performed genetic sequencing in the United States, basic questions such as the prevalence of these seven variant strains in the United States are still difficult to answer.