The Health guidelines released also said that people with COVID-19 symptoms or a body temperature above 37.5 degrees Celsius would not be allowed into Olympic venues, the agency said.
The Olympic competitions will be held in about 40 arenas in Tokyo and other Japanese regions.
It was delayed by a year because of the global health crisis.
The Olympics are set to take place from July 23 to Aug. 8 with foreign spectators banned.
(dpa/NAN)