An expert group drafted by the World Health Organization to help investigate the origins of the coronavirus pandemic says further research is needed to determine how COVID-19 first began, including a more detailed analysis of the possibility it was a laboratory accident.
That stance marks a sharp reversal of the U.N. health agency’s initial assessment of the pandemic’s origins, when it concluded last year that it was “extremely unlikely” that COVID-19 might have spilled into humans from a lab.
