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>> definitely a disappointment for her and heartbreaking for us. >> reporter: eaker will return to the u.s. after ten days' isolation. despite all the restrictions, the so-called bubble of the olympic village has been punctured with several positive covid cases detected among the south african soccer team. tokyo officials insist the village is still safe. >> the olympic village is a safe place to stay. >> reporter: health experts say the wider strategy of keeping the visiting foreigners away from locals is failing. >> it's obvious that there seems to be some sort of interaction between guests and visitors and also local people. >> reporter: tokyo officials insist they are containing the situation with only a few dozen cases among some 22,000