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Olympic games should be canceled. their biggest concern is virus variants. take a listen. >> 100,000 people from 200 countries with various variants but no symptoms will come to tokyo in a short time. i think there's a possibility that those variants will mix to create a variant which could be a huge threat to humans. covid is not infectious to children very much, but just in case a variant which is infectious to children comes out, that is the worst-case scenario. >> reporter: what the ioc says 80% of the people inside the olympic village will be vaccinated. that doesn't include the roughly 7...