Researchers from the Chinese Center for Disease Control and Prevention (China CDC) have published an eagerly awaited analysis of swabs collected at a seafood market in Wuhan, China, in the early weeks of the COVID-19 pandemic — as well as the underlying data. The international research community has been calling for this information since the beginning of the outbreak. The analysis confirms that swabs from the market — which has long been linked to the start of the pandemic —
. This suggests that it’s possible an animal could have been an intermediate host of a virus that spilled over to infect humans. But researchers say the latest findings still fall short of providing definitive proof that SARS-CoV-2 originated from an animal-to-human spillover event.
Spurious findings
Alice Hughes, a conservation biologist at the University of Hong Kong, has concerns about the quality of the analysis. As well as genomic fragments from animals including raccoon dogs, Hughes says that the paper identifies genetic material from pandas, mole rats and chimpanzees. Given that killing a panda attracts the death sentence in China, “there is absolutely no way any trace of panda could possibly be in that market”, she says.