TOKYO — Kara Eaker, an alternate on the United States women’s gymnastics team, has tested positive for COVID-19 in an Olympic training camp in Japan. Al Fong, the personal coach for both Eaker and fellow Olympic alternate Leanne Wong, confirmed the positive test in an email to The Associated Press on Monday. Wong said Eaker, 18, was vaccinated against the novel coronavirus two months ago. Both Eaker and Wong have been placed in isolation. USA Gymnastics did not identify Eaker or Wong but said in a statement that the athlete who tested positive and another alternate would be subject to...