MOSCOW—Russia’s Olympic Committee chief said on Wednesday he did not expect minors in the country’s Olympic team to be subjected to three weeks of quarantine if they are unable to get vaccinated against COVID-19 before next year’s Beijing Winter Games. China, where measures to tackle COVID-19 are among the strictest in the world, requires athletes and team officials to be vaccinated to avoid 21 days in quarantine ahead of the Games, which run from Feb. 4 to Feb. 20. Some exceptions for medical reasons can be granted on a case-by-case basis. Russia has yet to approve its vaccine for use on minors, meaning that members of the Olympic team who are under 18—including figure skaters—have not been vaccinated. “As long as the health ministry doesn’t approve vaccination on minors, the athletes who are minors cannot be vaccinated for logical reasons,” Stanislav Pozdnyakov, president of Russia’s Olympic Committee, told reporters. “But …