A joint World Health Organization-China study on the origins of COVID-19 says that transmission of the virus from bats to humans through another animal is the most likely scenario. According to a draft copy of the report obtained by the Associated Press, a lab leak is “extremely unlikely”.
The findings offer little new insight into how the virus first emerged and leave many questions unanswered, though that was as expected. But the report does provide more detail on the reasoning behind the researchers’ conclusions. The team proposed further research in every area except the lab leak hypothesis.
The report, which is expected to be made public Tuesday, is being closely watched since discovering the origins of the virus could help scientists prevent future pandemics.
But it’s also extremely sensitive since China bristles at any suggestion that it is to blame for the current one. Repeated delays in the report’s release have raised questions about whether the Chinese side was trying to skew its conclusions.
In the draft obtained by the AP, the researchers listed four scenarios in order of likelihood for the emergence of the new coronavirus. Topping the list was transmission from bats through another animal, which they said was likely to very likely. They evaluated direct spread from bats to humans as likely, and said that spread to humans from the packaging of “cold-chain” food products was possible but not likely.