Two new studies provide more evidence that the coronavirus pandemic originated in a Wuhan, China market where live animals were sold.
By LAURA UNGAR, AP Science Writer Two new studies provide more evidence that the coronavirus pandemic originated in a Wuhan, China market where live animals were sold – further bolstering the theory that the virus emerged in the wild rather than escaping from a Chinese lab.
People are also reading… In one study, which incorporated data collected by Chinese scientists, University of Arizona evolutionary biologist Michael Worobey and his colleagues used mapping tools to estimate the locations of more than 150 of the earliest reported COVID-19 cases from December 2019. They also mapped cases from January and February 2020 using data from a social media app that had created a channel for people with COVID-19 to get help.
"Now I realize it sounds like I just said that a once-in-a-generation event happened twice in short succession," Wertheim said. But certain conditions were in place — such as people and animals in close proximity and a virus that can spread from animals to people and from person to person. So"barriers to spillover have been lowered such that multiple introductions, we believe, should actually be expected," he said.
The pandemic's origins remain controversial. Some scientists believe a lab leak is more likely and others remain open to both possibilities. But Matthew Aliota, a researcher in the college of veterinary medicine at the University of Minnesota, said in his mind the pair of studies"kind of puts to rest, hopefully, the lab leak hypothesis."
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