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[Síguenos ahora también en WhatsApp. Da clic aquí] A new study involving researchers from several countries has confirmed that origin of coronavirus SARS-CoV-2responsible for the Covid pandemic is in
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A new study involving researchers from several countries has confirmed that origin of coronavirus SARS-CoV-2responsible for the Covid pandemic is in Huanan Fish Marketin China.
This was confirmed by scientists from several countries in coordination National Research Center of France (CNRS) and University of Arizona (USA), and the results of the joint work were published in a scientific journal cell.
The paper presents a list of species of wild animals present on the market, of which SARS-CoV-2the virus responsible for the Covid-19 pandemic in late 2019, according to an excerpt provided to the journal by the research centers.
The study is based on a new analysis of data released by the Chinese Center for Disease Control and Prevention (CDC), data from more than 800 samples collected in China. market seafood wholesaler Huanan and adjacent territories as of January 1, 2020, as well as based on the registered viral genomes of the first Covid patients.
Researchers say this is one of the data sets the most important thing that exists about origin pandemicand that the new findings support the idea that infected animals were introduced to the market in mid to late November 2019, which triggered the pandemic.
On January 1, 2020, after the animals were taken away and just hours after the market closed, Researchers at the Centers for Disease Control and Prevention (CDC) The Chinese went to the market to choose samples.
The researchers took soil sampleswalls and other surfaces of the stalls; A few days later, they returned to focus on the surfaces of the wild animal stalls, such as the cage and carts used to transport the animals, and also collected animal samples. drains And sewerage.
The Chinese team sequenced the samples to get all the RNA sequences (and which can also capture DNA) of all organisms present in the samples: viruses, bacteria, plants, animals and humans.
Researchers at the Centers for Disease Control and Prevention (CDC) they published their data and the results will be published in 2023 in the journal Nature, but they now note in Cell that the paper left unclear the exact identities of the animal species found in the data that may represent likely intermediate hosts, although those sequencing data remained in public repositories and open .
According to the latest analysis of this data, the virus SARS-CoV-2 was present at some of the same stalls as the wild animals sold at the market, including “raccoon dogs(small fox-like animals with markings reminiscent of a raccoon) and “civet cats” (small carnivorous mammals related to mongooses and hyenas).
In some cases even was found genetic material SARS-CoV-2 virus and these animals in the same strokes.
Many key animal species were wiped out before the Chinese research teams arrived, according to a paper published in Cell. there is no direct evidence What the animals were infected.
These are the same species that helped spread the SARS coronavirus to humans in 2002, the researchers said, warning that the riskiest move of all is to “catch wild animals full of viruses and then play with fire as they come into contact with people living in the centre of large cities, where population density favours the spread of these viruses.”
A new study has found short list of animal species from the wildlife market found in or near virus samples, which may represent the most likely intermediate hosts of SARS-CoV-2.
” AppearsCommon raccoon dog“, a species susceptible to SARS-CoV-2 that was a carrier of SARS-CoV in 2003 and which was found to be the most genetically abundant animal in samples from wild animal markets.
In one post, genetic material from the coronavirus was also found inpalm civets“, which were also associated with the previous SARS-CoV outbreak; and in other species, such as “bamboo rat” And porcupines Malayswere also detected in SARS-CoV-2 positive samples, in addition to “many other species“.
The researchers stressed the importance understand the origins of the Covid-19 pandemicespecially in light of other recent outbreaks, such as the bird flu virus among livestock in the United States.
And they emphasized that there were many disinformation about where SARS-CoV-2 originated and how uncovering that origin is important because it impacts the health and safety of populations around the world.
The researchers warned that since the pandemic began more than four years ago, although greater attention has been paid to laboratory safety, “little has been done to reduce the possibility of a similar zoonotic scenario recurring.”
EFE
Source: Aristegui Noticias
As an experienced journalist and author, Mary has been reporting on the latest news and trends for over 5 years. With a passion for uncovering the stories behind the headlines, Mary has earned a reputation as a trusted voice in the world of journalism. Her writing style is insightful, engaging and thought-provoking, as she takes a deep dive into the most pressing issues of our time.
