Transcript for US gymnast tests positive for COVID-19 days before the games
Steve, thank you. And authorities had feared this in the Tokyo olympics. A member of the U.S. Gymnastics team testing positive, as well as coco gauff. And inside the olympic bubble, at least 61 people have now tested positive for the virus. James Longman from Tokyo tonight. Reporter: Tonight, covid-19 defeating some olympic athletes before they've even had a chance to compete. Heartbreak for 18-year-old Kara Eaker, an alternate for the U.S. Women's gymnastic team testing positive in Japan. Her family saying she had been vaccinated. Eaker, now quarantining along with another alternate. Usa gymnastics stating they are in a separate training facility and will continue their preparation for the games. The biggest disappointment is that, you know, this takes her out of it completely. Reporter: The news just hours after tennis star coco gauff found out she too is positive and won't be able to compete. Tweeting, "It has always been a dream of mine to represent the usa at the olympics and I hope there will be many more chances for me to make this come true in the future." According to the ioc, more than 60 people in the olympic bubble have tested positive for the virus. No matter what the number is, it's how quickly we identify them, how quickly the cases are taken away, quarantined, and treated and looked after. Reporter: And with the games yet to start, we have already seen a number of breakthrough cases. A south Korean ioc official who was fully vaccinated, testing positive at the airport. And a vaccinated Czech volleyball player becoming the third athlete inside the olympic village to test positive. Stop the Tokyo olympics! Reporter: Over the weekend, small protests calling for the cancellation of the games. I met Kyoko Ishikawa. She's been to every summer olympics since 1992. Are you worried that this olympics will create more coronavirus in Japan? I hope this olympic will be completed with limited risks. Reporter: The big issue is contact tracing. When two members of the men's south African soccer team tested positive, 21 members of their squad had to self-isolate. This could derail the entire olympics. David? James, thank you. In the meantime, back here
This transcript has been automatically generated and may not be 100% accurate.