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Could the coronavirus have sprung from a lab or did it pass to humans from an animal? The evidence is out there, but it could be difficult to locate, says Graham Lawton [ABSTRACT FROM AUTHOR]

The article informs that according to Michael Worobey at the University of Arizona and Kristian Andersen of Scripps Research, in San Diego, first COVID-19 infection was emerged from the Wuhan, China market. It mentions analysis showed that, while both lineages were present in cases in the vicinity of the market, no samples contained either any transitional form or any shared common ancestor.