TOKYO—An alternate on the United States women’s gymnastics team has tested positive for COVID-19 in an Olympic training camp in Japan. Olympic champion Simone Biles was not affected, nor were any of the other favorites to win the team gold, but another alternate was placed into isolation because of contact tracing, USA Gymnastics said Monday. “One of the replacement athletes for the women’s artistic gymnastics team received a positive COVID test on Sunday, July 18. After reviewing the implemented COVID protocols with members of the delegation, the local government determined that the affected replacement athlete and one other replacement athlete would be subject to additional quarantine restrictions,” the USAG statement said. “Accordingly, on Monday, the Olympic athletes moved to separate lodging accommodations and a separate training facility, as originally planned, and will continue their preparation for the Games. The entire delegation continues to be vigilant and will maintain strict protocols …