Workers, center, help direct a man into a booth for a coronavirus infection test at the Main Press Center for the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. About 30,000 people from scores of nations are spitting into tiny plastic vials every day at the Olympics in a routine that’s grown crucial in going ahead with the pandemic-era Games, according to organizers. (AP Photo/Hiro Komae)

Plastic vials for testing the coronavirus infection sit on a table at the Main Press Center for the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. About 30,000 people are spitting into tiny plastic vials every day at the Tokyo Olympics in a routine that’s grown crucial in going ahead with the pandemic-era Games. (AP Photo)

A woman drops off a test for the coronavirus infection at the Main Press Center for the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. About 30,000 people are spitting into tiny plastic vials every day at the Tokyo Olympics in a routine that’s grown crucial in going ahead with the pandemic-era Games. (AP Photo/Hiro Komae)