The conditions mean that “although you are a close contact, you can do the minimum necessary to be able to continue your preparation for the Games while you are being watched,” Pierre Ducrey, Olympic Games director of operations, said on Monday. .

Earlier Monday, before the Czech case was reported, organizers of the Tokyo Olympics confirmed three new cases of COVID-19, including a media worker arriving in Tokyo and a staff member or Games official in the Chiba prefecture.

The two people, who have not been identified, were quarantined for 14 days, Games organizers said.

The Tokyo Metropolitan Authority reported 727 new cases of COVID-19 on Monday, which was the 30th consecutive day the tally was higher than a week earlier. The tally was 502 last Monday.

The games open Friday without fans at nearly every venue at the event, including the opening ceremony, amid a state of emergency in Tokyo and a slower-than-expected vaccine rollout . Japanese officials said Monday that 21.6% of the country’s 126 million people were fully immunized.

Total Games-related infections are now 58 as of July 1.

These result from the arrival of 22,000 people in Japan since July 1, including 4,000 in the village, said Ducrey. About 11,000 athletes are expected to compete in the Tokyo Olympics through August 8.