US records nearly 1,000 infectious coronavirus variants_ 英语 央视 _ 央视 网 (

The majority of cases of coronavirus changes in the United States have been caused by the variant first detected in Britain. Meanwhile, a new version of SARS-CoV-2, CAL.20C, was discovered in southern California and is spreading across and outside the country.

WASHINGTON, Feb. 13 – Nearly 1,000 cases of infection with coronavirus variants have been reported in 44 U.S. states in total, according to the latest data from the U.S. Centers for Disease Control and Prevention (CDC).

The majority of these cases, 981, were caused by the variant called B.1.1.7, which was first detected in Britain.

13 cases of the new strain were first detected in South Africa, known as B.1.351, and three cases of the P.1 strain were first detected in Brazil.

These are the top three coronavirus variants currently spreading in the United States, according to the CDC.

Several SARS-CoV-2 modifications have emerged over the past several months, attracting the attention of health and science experts around the world.

The B.1.1.7 and B.1.351 are troubling scientists because emerging data suggest they are more mobile, according to an article published Friday in the Journal American Medical Association (JAMA).

Variation can carry a number of mutations, but changes in the virus’s spike proteins, used to enter and ingest cells, are particularly troubling. Changes in this protein could make vaccines less effective against certain strains, according to the study written by Anthony Fauci, the country ‘s leading infectious disease expert, and other researchers.

The authors note that the B.1.351 variant may be partially or completely contraindicated by some SARS-CoV-2 monoclonal antibodies currently authorized for use as a therapeutic agent in United States.

A new SARS-CoV-2 variable, CAL.20C, has been found in southern California amid an increase in local diseases and is spreading through and outside the United States, according to another research letter published in JAMA.

By January 22, the variant had grown to account for 35 percent of all coronavirus species in California and 44 percent of all samples in the southern state and was found in 26 states that as well as other countries, according to the study by researchers at Cedars-Sinai Medical Center in Los Angeles.

Recognition of all new variables, including the new emergency pressure in California, requires systematic evaluation, according to the researchers. The increase of these variables is a reminder that, while SARS-CoV-2 continues to spread, it has the potential to adapt to new changes.

The fight against SARS-CoV-2 and COVID-19 requires robust surveillance, monitoring, and use of vaccines worldwide, the studies said.

Researchers also note the need for a pan-coronavirus vaccine. Once researchers know more about how the virus changes as it spreads, it may be possible to develop a vaccine that protects most or all of it. sort of.

The United States has recorded more than 27.5 million cases with more than 481,600 related deaths Saturday afternoon, according to the real-time census conducted by Johns Hopkins University.