Contentious Hunt for Covid’s Origin Points to China Animal Trade
Monday, 22 March, 2021, 16:12
Scientists tracing the origins of the Covid-19 pandemic believe they’ve identified a possible transmission source: China’s thriving wildlife trade.
The highly anticipated findings from experts convened by the World Health Organization and the Chinese government are expected to show parallels to the spawning in 2002 of severe acute respiratory syndrome, or SARS, a bat-borne coronavirus spread by civets that killed 800 people. The path trod by SARS-CoV-2 -- as the new coronavirus is known -- before it emerged in central China in December 2019 remains a mystery, though it’s one researchers say can be solved.
In Wuhan, where the first cluster of cases occurred, scientists involved in the hunt identified four hypotheses to explain the virus’s genesis, including two that stoked controversy even as they were deemed unlikely. The idea that the virus was introduced via contaminated food or packaging is one embraced in Beijing, while the Trump administration said it may have been the result of a laboratory accident. But the most plausible theory, say experts involved in the mission, concerns China’s wildlife trade for food, furs and traditional medicine, a business worth about 520 billion yuan ($80 billion) in 2016.Live animals susceptible to coronavirus infection were present at the Huanan food market in downtown Wuhan, the city where the first major Covid-19 outbreak was detected. It’s possible they acted as conduits for the virus, carrying it from bats -- likely the primary source -- to humans, says Peter Daszak, a zoologist who was part of the joint research effort, which saw international experts visit Wuhan earlier this year after months of stonewalling by the Chinese government.
The scientists’ report, slated for release this week after delays due to political wrangling, is likely to be far from conclusive. More studies are planned, including outside China, with deciphering Covid-19’s creation story vital to understanding how best to thwart its resurgence, and to help avert similar catastrophes in the future.
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