Heart inflammation found in athletes after mild, asymptomatic COVID-19Four of 26 competitive athletes (15%) who had recovered from mild or asymptomatic COVID-19 had evidence suggestive of myocarditis, or inflammation of the heart muscle, on cardiac magnetic resonance (CMR) imaging, according to a research letter published today in JAMA Cardiology.Researchers from The Ohio State University performed CMR, electrocardiography, and echocardiography and measured serum troponin I levels in all competitive athletes referred to the sports medicine clinic 11 to 53 days after testing positive for coronavirus to detect myocarditis, which would flag athletes before they returned to play that they might be at high risk for sudden cardiac death.Twelve