July 19, 2021
New data leads to rethinking (once more) where the pandemic actually began
Back in May, a group of scientists – many at the top of the virology field – shifted the debate about the origins of COVID-19. They published a letter in the journal Science, saying the so-called lab leak theory needs to be taken more seriously by the scientific community. Now one of the scientists who signed that letter says new data have come to light. And that information, summarized in an online review, has changed his thinking. "I do think transmission from another species, without a lab escape, is the most likely scenario by a long shot," says evolutionary biologist Michael Worobey at the University of Arizona.