On February 14, local time, a number of institutions and universities in the United States published an article titled "Emergence in late 2020 of multiple lineages of SARS" (Emergence in late 2020 of multiple lineages of SARS). -CoV-2 Spike protein variants affecting amino acid position 677) academic paper.
The researchers said that they found seven variants of the new coronavirus in the United States, and the genetic letter mutations are the same.
According to the study, these seven variants have been found across the United States, but it is not yet certain whether these variants are more infectious.
The researchers said that they discovered these new variants of the new coronavirus in the process of genetically sequencing the new coronavirus.
They worry that the new mutant strain may make it easier for the virus to enter human cells.
According to the study, the new coronavirus variants found in many states in the southern United States can be traced back to October 2020, but the exact time and location of the mutation are still unknown.
Since the United States currently only conducts genetic sequencing of less than 1% of the new coronavirus samples, basic questions such as the prevalence of these 7 variants in the United States are still difficult to answer.
(CCTV reporter Xu Dezhi)