Steven Quay, a virus specialist formerly at Stanford University, and Richard Ebright, a virus expert at Rutgers University, told lawmakers there is no evidence supporting the theory that the virus originated in animals in China.
Answers prove elusive as scientists weigh lab leak or animal source for COVID
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Mr. Quay said the danger in China’s work on Nipah is that it could become aerosolized and cause mass death.
China's Wuhan institute studied deadly bioterrorism agent, Congress told
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