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FILE - A security person moves journalists away from the Wuhan Institute of Virology after a World Health Organization team arrived for a field visit in Wuhan in China's Hubei province, Feb. 3, 2021. (AP Photo/Ng Han Guan, File)

FILE - A security person moves journalists away from the Wuhan Institute of Virology after a World Health Organization team arrived for a field visit in Wuhan in China's Hubei province, Feb. 3, 2021. (AP Photo/Ng Han Guan, File)

FILE - A view of the P4 lab inside the Wuhan Institute of Virology is seen after a visit by the World Health Organization team in Wuhan in China's Hubei province, Feb. 3, 2021. (AP Photo/Ng Han Guan, File)

FILE - A view of the P4 lab inside the Wuhan Institute of Virology is seen after a visit by the World Health Organization team in Wuhan in China's Hubei province, Feb. 3, 2021. (AP Photo/Ng Han Guan, File)