FILE - In this Tuesday, Feb. 9, 2021 file photo, Marion Koopmans of the World Health Organization team speaks during a joint press conference held at the end of the WHO mission in Wuhan in central China's Hubei province. In a press briefing on Wednesday, March 10 organized by the think tank Chatham House in London, Peter Daszak estimated that collective scientific research might be able to pin down how animals carrying COVID-19 infected the first people in Wuhan identified last December. Koopmans, who was also on the WHO-led team, said they considered numerous hypotheses for how the pandemic might have started, including the possibility of a laboratory accident. (AP Photo/Ng Han Guan, file)
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