Has the virus mutated since July 2020 in the United States?

BEIJING, Feb. 15 (Xinhua) -- As of 8:24 p.m. Beijing time on the 15th, the cumulative number of confirmed cases in the world has exceeded 108 million, with more than 2.39 million deaths, according to real-time statistics from Johns Hopkins University in the United States.
In the worst-affected U.S., health
urged people to remain vigilant despite slowing growth in new diagnoses; studies have found that the U.S. has mutated the new coronavirus as early as July 2020; and the U.S. is pushing ahead with new crown vaccinations, but data in some areas are confusing, making vaccinations difficult., the cumulative number of confirmed cases in the United States has exceeded 27 million, with more than 485,000 deaths. According to Johns Hopkins, the average number of confirmed cases in the United States for seven consecutive days was as high as 200,000 in December 2020 and to about 250,000 in January 2021.
, however, the average fell below 100,000 for the first time in more than three months on February 12, 2021, and below 100,000 on February 13.
, rochelle Valensky, director of the U.S. Centers for Disease Control and Prevention, said, "While these downward trends are encouraging, they are falling from a very high position." Valensky also noted that the number of confirmed cases in the U.S. remains at around 100,000, with about 1,500 to 3,500 deaths a day, about 2.5 times the number in the summer of 2020.
, Mr. Wallensky called on the public to continue wearing masks and remain vigilant. In addition, Valensky said, the mutated new coronavirus appears to be more contagious and has now spread to more than 30 U.S. states, potentially resulting in more confirmed and fatal cases in the U.S.the spread of the mutated virus in the United States, a study published in the Journal of the American Medical Association shows that as early as July 2020, a new variant of the coronavirus was detected in Los Angeles County, California.
study shows that the mutant virus, known as CAL.20C, is spreading in at least 19 U.S. states and has spread to six countries around the world.to contain the outbreak, the U.S. is trying to push ahead with new crown vaccinations, which so far have been given nearly 53 million doses, including 14.07 million who have completed two, according to the Centers for Disease Control and Prevention.
whether vaccination can prevent the mutant virus, U.S. infectious disease expert Fucci said on the 14th local time, in South Africa did appear after the recovery of infected people re-infected with the mutant virus. However, Folch believes that while the mutated virus has reduced the effectiveness of the vaccine to some extent, "the vaccine still has some buffers that provide some protection" and says it can better prevent re-infection after vaccination., the actual vaccination process in the United States is problematic.
Local time on February 14, the Los Angeles Times reported that the state's vaccination data had become "unusually confusing" due to a series of reasons, including missed doses, incorrect uploads, delays and software failures, which prevented the state from tracking the dose of available vaccines at any time.
, California Gov. John Newsome has been calling for faster vaccinations and has threatened to withdraw them from slow-moving areas.
, however, because of problems with vaccine data management, many california county
are concerned that the wrong data could lead to incorrect conclusions for state governments, leading to increased conflicts between governments at all levels and reduced vaccination efficiency.