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The possibility of the Covid-19 virus leaked from a laboratory should not be ruled out, according to Prof George Gao.
The former top Chinese government scientist played a key role in the pandemic response and efforts to trace its origins.
However, many other scientists believe the virus passed naturally from animal to humans.
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L’articolo Covid-19: ‘Don’t rule out lab leak’, says former Chinese scientist – BBC News proviene da Websuggestion | Masterblog.
