A leak from a Wuhan lab is “extremely unlikely” to be the source of COVID-19, says the W.H.O. team searching for the origin of the pandemic. Melissa Duggan on the theories the experts are investigating.
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A leak from a Wuhan lab is “extremely unlikely” to be the source of COVID-19, says the W.H.O. team searching for the origin of the pandemic. Melissa Duggan on the theories the experts are investigating.