Tests for myocarditis should be done only if cardiac symptoms exist, says a sports-medicine specialist who co-wrote the guidance.
A large study indicated that just 1% of athletes with SARS-CoV-2 infections experienced persistent symptoms, or long COVID.
Any virus can infect heart-muscle cells, but the novel coronavirus appears to have a particularly detrimental effect, which cardiologists are trying to understand. Autopsy studies of very sick coronavirus patients "have shown that about 50% of
