Competing Theories Almost two years since Covid began infecting people in the central Chinese city of Wuhan, scientists are yet to determine the pandemic’s genesis.
Daszak, who supports the theory of wildlife source, has been criticized for collaborating on National Institutes of Health-funded research at the Wuhan Institute of Virology on lab studies that some scientists say may have led to the creation of a progenitor virus.
No evidence supporting the lab-leak theory has emerged. Last month, the U.S. intelligence community ruled out the possibility that SARS-CoV-2 was developed by China as a biological weapon, but no consensus was reached on its origin.