WHO Chief Says All Possible Covid Origins "Need Further Study"

World Health Organization director-general Tedros Adhanom Ghebreyesus said the UN health agency had received the report over the weekend, adding that all theories on how the virus entered humans remained on the table.

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. World Health Organization director-general Tedros Adhanom Ghebreyesus said the UN health agency had received the report over the weekend, adding that all theories on how the virus entered humans remained on the table. "All hypotheses are open, from what I read from the report," Tedros told a virtual press conference in Geneva, adding that they "will need further study". A team of international experts visited Wuhan in China in January and February this year, examining and ranking in their subsequent report four possible pathways by which SARS-CoV-2 -- the virus that causes Covid-19 disease -- might have entered humans before spreading around the world.