IN PHOTOS | WHO Expert Team in China's Wuhan Investigates the Origin of Coronavirus

Security personnel move a barrier to clear the way for the World Health Organization team as they depart from the Wuhan Jinyintan Hospital after a field visit in Wuhan in central China's Hubei province on Saturday, Jan. 30, 2021. The World Health Organization team investigating the origins of the coronavirus pandemic visited another Wuhan hospital that had treated early COVID-19 patients on their second full day of work on Saturday. (AP Photo/Ng Han Guan)

Members of the World Health Organization team depart from the Wuhan Jinyintan Hospital after a field visit in Wuhan in central China's Hubei province on Saturday, Jan. 30, 2021. The World Health Organization team investigating the origins of the coronavirus pandemic visited another Wuhan hospital that had treated early COVID-19 patients on their second full day of work on Saturday. (AP Photo/Ng Han Guan)

Municipal workers leave after disinfecting an entrance of the Wuhan Jinyintan Hospital as the World Health Organization team makes a visit in Wuhan in central China's Hubei province on Saturday, Jan. 30, 2021.

Security personnel jump across a barrier at an entrance to the Wuhan Jinyintan Hospital where a team from the World Health Organization visited in Wuhan in central China's Hubei province on Saturday, Jan. 30, 2021. (AP Photo/Ng Han Guan)

Members of the World Health Organization team prepare to leave for a second day of field visit in Wuhan in central China's Hubei province on Saturday, Jan. 30, 2021. (AP Photo/Ng Han Guan)

Chinese men wearing masks stand near stone lions across from the Wuhan Jinyintan Hospital where a team from the World Health Organization visited in Wuhan in central China's Hubei province on Saturday, Jan. 30, 2021. (AP Photo/Ng Han Guan)

Security personnel guard an entrance to the Wuhan Jinyintan Hospital where a team from the World Health Organization visited in Wuhan in central China's Hubei province on Saturday, Jan. 30, 2021. (AP Photo/Ng Han Guan)

A man and child eat breakfast at a shop across from the Wuhan Jinyintan Hospital where a team from the World Health Organization visited in Wuhan in central China's Hubei province on Saturday, Jan. 30, 2021. (AP Photo/Ng Han Guan)

A woman wearing a mask walks past statues with masks placed on them in Wuhan in central China's Hubei province on Friday, Jan. 29, 2021. A World Health Organization team is visiting the central city of Wuhan where the coronavirus was first detected. (AP Photo/Ng Han Guan)

Security personnel clear the way for the convoy of the World Health Organization team as they depart from the Wuhan Jinyintan Hospital after a field visit in Wuhan in central China's Hubei province on Saturday, Jan. 30, 2021