Three members of the Australian athletics team remain in isolation at the Tokyo Olympics after close contact with American pole vaulter Sam Kendricks, who has tested positive for Covid-19. Kendricks, the reigning world champion, has been ruled out of the Games. The three Australian athletes had PCR tests and all returned negative results, but will remain in isolation.

A further 41 athletes briefly isolated in their rooms but no longer need to. Those still in isolation will be allowed to train, subject to strict measures, and are expected to compete as planned. The Olympic athletics competition starts on Friday.

"Once again, abundant caution and our strict protocols continue to keep the team safe," said Australian Olympic Team Chef de Mission Ian Chesterman. The International Olympic Committee said two Olympic-related Covid-19 cases are being treated in hospital, although not in intensive care. There have now been 198 cases among Olympic personnel, including 20 athletes.

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