I would not be surprised if Mikaela Shiffrin's poor performance at the Olympics was Covid-related. I think a lot of athletes are going to find their performance is not up to their pre-pandemic level. Mostly it's from the heart damage even asymptomatic infections can cause. Early in the pandemic, researchers at Ohio State University used MRI to find evidence of recent or active cardiomyopathy in around 40% of student athletes who had mild or asymptomatic infections. This could be unknown by the victims, until they tried to compete in their sport. Then their maximum cardiac output could be just a bit impaired.
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