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Michael Worobey hasn’t always been certain about where covid originated. During the pandemic, the University of Arizona professor has studied how the virus changes over time, and was among a group of 18 influential scientists who signed a letter in May calling for further investigation to help prove or disprove the theory that SARS-CoV-2 emerged through a possible lab accident.
Now he’s published a new study in Science that suggests that the earliest diagnosed covid case was incorrectly understood—and that Wuhan’s Huanan wet market was almost certainly the site of a spillover of the SARS-CoV-2 virus from animals to humans, rather than a lab leak. His intervention, and growing confidence in the natural spillover idea, is likely to re-ignite the debate around the hunt for the origins of covid.
Drawing on myriad sources, including peer-reviewed papers, insights from epidemiologists who had access to first-hand information, and media reports, he tried to determine whether bias crept in when clinicians in Wuhan were trying to understand the viral outbreak. What he found—not only that there was no obvious bias, but also that many of the first diagnosed cases of covid were either people who worked at the market or lived nearby—has settled his mind that the virus is unlikely to have emerged from a lab leak and that the market was the site of a spillover from animals.
Link
Others disagree, of course. We may never really be sure.
Now he’s published a new study in Science that suggests that the earliest diagnosed covid case was incorrectly understood—and that Wuhan’s Huanan wet market was almost certainly the site of a spillover of the SARS-CoV-2 virus from animals to humans, rather than a lab leak. His intervention, and growing confidence in the natural spillover idea, is likely to re-ignite the debate around the hunt for the origins of covid.
Drawing on myriad sources, including peer-reviewed papers, insights from epidemiologists who had access to first-hand information, and media reports, he tried to determine whether bias crept in when clinicians in Wuhan were trying to understand the viral outbreak. What he found—not only that there was no obvious bias, but also that many of the first diagnosed cases of covid were either people who worked at the market or lived nearby—has settled his mind that the virus is unlikely to have emerged from a lab leak and that the market was the site of a spillover from animals.
Link
Others disagree, of course. We may never really be sure.