New Data Links Covid-19’s Origins To Raccoon Dogs At Wuhan Market



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New Data Links Covid-19’s Origins To Raccoon Dogs At Wuhan Market

6 Days ago
By storyteller24

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Newly released genetic data gathered from a live food market in Wuhan has linked Covid-19 with raccoon dogs, adding weight to the theory that infected animals sold at the site started the coronavirus pandemic, researchers involved in the work say.

Swabs collected from stalls at the Huanan seafood market in the two months after it was shut down on 1 January 2020 were previously found to contain both Covid and human DNA. When the findings were published last year, Chinese researchers stated that the samples contained no animal DNA.

That conclusion has now been overturned by an international team of scientists. Their analysis of gene sequences posted by the Chinese team to the scientific database Gisaid found that some of the Covid-positive samples were rich in DNA from raccoon dogs. Traces of DNA belonging to other mammals, including civets, were also present in Covid-positive samples.

The discovery does not prove that raccoon dogs or other animals infected with Covid triggered the pandemic, but scientists presenting the work to an expert group at the World Health Organization believe it makes that more likely.

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