A new analysis of samples taken from a market in Wuhan, China, during the early days of the pandemic are the strongest evidence yet that the COVID-19 virus jumped from animals to humans, some researchers say.
The samples found evidence of the presence of the novel coronavirus along with genetic material from multiple animals ¡ª including raccoon dogs, which are susceptible to the disease ¡ª according to a report published Monday on the Zenodo.org open science website, which builds a case for the Huanan Wholesale Seafood Market as the epicenter of the pandemic.
In some samples there was more animal genetic material than human genetic material indicating possible SARS-CoV-2 infections in animals, the report says. Like many studies released quickly during the pandemic, it has not yet undergone review by the scientific community.
Those involved worked to finish the report after early findings garnered intense interest and a flurry of media coverage last week. The World Health Organization has called on China to fully share the genetic data the researchers analyzed, which appeared briefly in a public database before being taken down on March 11. The raw data have still not been made available.
For some outside experts, the situation has sparked concerns.
¡°I worry a lot about our jumping on tidbits that are incomplete and cannot be verified,¡± said David Relman, a professor of microbiology and immunology at Stanford University. ¡°I think we need to take a deep breath and insist on the kind of process and science that any important issue, especially this one deserves.¡±
Relman said this is true on both sides of the debate over COVID-19¡¯s origins. He¡¯s long advocated for both theories ¡ª a laboratory accident or natural spillover ¡ª to be investigated with equal rigor.
The report is the latest chapter in a fraught search for answers about how the pandemic began. On Monday, U.S. President Joe Biden signed into law a bill to declassify intelligence on the origins of COVID-19. The U.S. intelligence community remains split in its findings, with the the Federal Bureau of Investigation and Department of Energy concluding that the virus likely came from a lab accident.
The latest report further complicates the picture.
¡°These data do not provide a definitive answer to the question of how the pandemic began,¡± WHO Director-General Tedros Adhanom Ghebreyesus said Friday in a news conference, ¡°but every piece of data is important in moving us closer to that answer.¡±
The scientists generated their report after samples uploaded by Chinese scientists briefly appeared in the open-access genomics database GISAID. Florence Debarre, an evolutionary biologist at the French National Center for Scientific Research, fortuitously spotted the data on March 4 and reached out...
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