Health
The Covid mutation does not appear to help the virus spread more rapidly, the study says.
A man wearing a face mask is waiting for a train at Central Station during a COVID-19 pandemic in Stockholm, the capital of Sweden, on November 3, 2020.
Wei Xuechao | Xinhua News Agency | Getty Images
London — Global studies of more than 12,000 coronavirus mutations appear to have spread the virus that causes Covid-19 more rapidly.
Researchers at the University College London evaluated Covid mutations in more than 46,000 samples from people in 99 countries and concluded that all mutations appear to be neutral when it comes to accelerating the spread of the virus. I did.
The· Peer-reviewed studiesWe identified a total of 12,706 mutations published Wednesday in the Nature Communications Journal. Among them, 398 strains of coronavirus were found to occur repeatedly and independently.
Researchers have decided to focus on 185 mutations that have occurred independently at least three times during the pandemic process.
“Currently circulating recurrent mutations appear to be evolutionarily neutral and not a sign of adaptation, but primarily by the human immune system through RNA editing,” the researchers said.
“At this stage, there is no evidence that SARS-CoV-2 is significantly more contagious due to the recurrence of the mutation,” they added.
“I missed the initial window”
The results of the study come as pharmaceutical companies and research centers scramble to provide safe and effective vaccines that help end the coronavirus pandemic.
British pharmaceutical giant AstraZeneca said Monday that an interim analysis showed that the average efficacy of the coronavirus vaccine was 70%. The news followed strong results on the efficacy of Pfizer BioNTech and Moderna vaccine candidates.
COVID-19 coronavirus molecule, March 24, 2020.
CDC | API | Gamma Rafo via Getty Images
The virus mutates spontaneously, and scientists have previously stated that small mutations in the coronavirus did not significantly affect its ability to spread or cause disease.
However, earlier this year Well-discussed mutants It was thought to promote viral infection of the coronavirus known as D614G. Dr. Anthony Fauci, a Coronavirus advisor at the White House, warned that newly discovered variants could facilitate the spread of the pathogen.
“All fairly common mutations appear to be neutral to the viruses that carry them. This includes D614G. This includes transmission, according to our analysis. Rather than a driver, he is a stowaway who has brought a lucky vehicle to a successful system, “says Professor Francois. Balloux, director of the UCL Genetics Institute, and one of the authors of the study.
“This raises the question of why # SARSCoV2 is so well adapted to human infections. The plausible answer is that we missed an early window adapted to humans,” Barrow said on Wednesday. Said on Twitter.
To date, more than 60.5 million people have been infected with the coronavirus and 1.4 million have died, according to data compiled by Johns Hopkins University.
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