TOKYO (AP) — About 100 of the 613 U.S. athletes descending on Tokyo for the Olympics are unvaccinated, the U.S. Olympic and Paralympic Committee’s medical chief said hours before Friday night’s Opening Ceremony. Medical director Jonathan Finnoff said some 600 of the American athletes had filled out their health histories as they prepared for the trip, and estimated 83% had replied they were vaccinated. The IOC has estimated around 85% of residents of the Olympic Village are vaccinated; they base that on what each country’s Olympic committee tells them but have not independently verified the number.