WHO chief says all possible Covid origins 'need further study'

The WHO's chief said Monday that all hypotheses on the Covid-19 pandemic's origins remained open and needed further study, based on international experts' report on their mission to Wuhan.

WHO chief says all possible Covid origins 'need further study'
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The WHO's chief said Monday that all hypotheses on the Covid-19 pandemic's origins remained open and needed further study, based on international experts' report on their mission to Wuhan.