From http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.685.8394&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.685... > Duri

From http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.685.8394&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.685... > During the Sheffield, England influenza epi-demic from 1972 to 1973, the cases of 50 consecutive patients who were initially diagnosed as mild cases and were treated on an outpatient basis were followed. Transient electrocardiogram (ECG) changes were seen in 18 patients, and long-lasting changes were seen in 5 patients. Like I said, covid is no different than the flu in this regard. The above linked paper is full of other case studies showing similar data, from 1918 to the 2000s. While reading up on your citation I found tons of literature out there talking about how common this is with other bacterial and viral infections. EDIT: I grant that the numbers for myocardial inflammation are not insignificant. I'm learning as I go. But I'll stand by my opinion that covid is not (historically) anything out of the ordinary, just another coronavirus that made the jump to people, like so many before, and lockdowns are not going to eradicate it.