Alysa Liu, the United States' top female figure skater, tested positive for COVID-19 and withdrew from the U.S. national championships on Friday, injecting doubt into plans for next month's Olympics.
Liu, 16 years old and already a two-time national champion, could still be selected for the Olympic team. But even if she is, strict rules governing entry into China for the Games will require her to test negative at least twice before the team departs in a few weeks.
In an Instagram post confirming the news, Liu said she was "fully vaccinated," had been wearing an N95 mask, and twice tested negative for COVID before traveling to Nashville for the national championships.