Health
New research shows a COVID pandemic that began in the Wuhan market
February 27, 2022-Two preprint studies published on Saturday provide additional evidence that the coronavirus pandemic began in the Wuhan market in China.
By analyzing data from several sources, scientists concluded that the virus originated in animals and spread to humans at the South China Seafood Market in late 2019. They added that there is no evidence to support the theory that the virus came from the Wuhan Institute.
“Looking at all the evidence together, it’s very clear that the pandemic started in the Juanan market,” said Michael Worobey, co-author and evolutionary biologist of both studies at the University of Arizona. Said New York Times..
The two reports have not yet been peer-reviewed or published in scientific journals. They were posted to Zenodo, an open access research repository operated by CERN.
of One studyUsing spatial analysis, researchers have shown that the earliest COVID-19 cases diagnosed in December 2019 are market-related. Researchers also found that environmental samples tested positive for the SARS-CoV-2 virus were associated with animal vendors.
of Another studyResearchers have discovered that two major lines of coronavirus originated from at least two events when the virus spreads from animals to humans. They write that the first transmission is most likely to occur in late November or early December 2019, and the other transmissions are most likely to occur weeks later.
Some of the researchers behind the new research Publish a review Last summer, he said the pandemic occurred in the animal, perhaps wildlife market. At that time, they said the first known case was a vendor in the South China market.
New findings provide the strongest evidence ever that a pandemic had an animal-related origin, Warobi. Told to CNN.. He called the result of the theory that the pandemic started in the lab “game, set, match”.
“It no longer makes sense to imagine that this started in any other way,” he said.
In another series of studies, Chinese CDC scientists conducted a new analysis of samples collected on the market in January. They found that the sample contained two major strains of coronavirus.They posted the results In the report On Friday’s ResearchSquare preprint server.
Jeremy Kamil, a virologist at the Louisiana State University School of Health Sciences who was not involved in the new study, said: New York Times..
The first spread of the coronavirus was like fireworks, Warobi told CNN that it started from the market and exploded outwards. According to the study’s authors, the “overwhelming majority” cases were particularly relevant to the western part of the market, where most live mammal sellers are located. Later, cases of COVID-19 spread from there to the community, and by January or February 2020, the infection pattern had changed.
When researchers tested the surface of the coronavirus genetic material on the market, one stall was the most positive, including the cage in which the raccoon dog was kept.
The study’s authors said the findings emphasize the urgent need to pay attention to situations in which wildlife and humans interact closely on a daily basis.
“We need to do a better job of breeding and regulating these wildlife,” Robert Garry, one of the co-authors and professor of microbiology and immunology at Tulane University School of Medicine, told CNN. ..
This could include better infrastructure in places like markets where the virus spreads from animals to humans, he said. Surveillance is also key to preventing future pandemics by detecting new respiratory diseases in humans, isolating patients, and sequencing new strains of the virus.
“This isn’t the last time this happens,” he said.
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Sources 2/ https://www.webmd.com/lung/news/20220227/new-studies-indicate-covid-pandemic-began-wuhan-market The mention sources can contact us to remove/changing this article |
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