Analysis of gene sequences by international team finds Covid-positive samples rich in raccoon dog DNA
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.
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.
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