"[Redfield] offered no explanation for this idea other than to  say as a virologist, he does not believe the virus could have been so  contagious when it jumped directly from an animal to a person. Instead,  he contends it was manipulated in a Wuhan research laboratory to become  more contagious and then accidently released by a worker in September or  October 2019, a few months before coming to public attention.
Several scientists said Redfield's theory did not pass the scientific smell test.
"There's a fundamental difference between having a theory and testing  a theory and showing evidence that your theory is a fact," said Paul  Duprex, a virologist and director of the center for vaccine research at  the University of Pittsburgh.
             Duprex, who runs a  biosafety level three lab, which handles dangerous pathogens, said he  would never rule out the possibility of human error.
             
"No  open-minded scientist will ever say to you, or should say to you, 'this  is impossible," he said. "What a good scientist will say is, 'Where is  the evidence?'"
             
Duprex said he has seen no evidence to suggest the virus first emerged from a lab.
https://www.msn.com/en-us/news/us/f...b-in-china-scientists-are-dubious/ar-BB1f0EWi