claim: autopsies show varied forms of heart damage in covid-19 patients
evidence_1: researchers had found, for example, that 8-12 percent of hospitalized covid-19 patients had elevated levels of muscle contraction-regulating proteins called troponins--a sign of heart damage--and that these patients had an increased risk of mortality compared with those who didn't have excess troponins.", "early in the pandemic, other clinicians noted that even some patients who didn't have preexisting heart conditions experienced cardiovascular damage while fighting covid-19 infections, pointing to a possible causative link.", 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  "but stone says he was surprised to see just how common these were--18 out of 21 covid-19 patients' hearts harbored macrophages that exhibited this type of inflammation.")