Cases of heart inflammation after COVID-19 vaccination were more common among Moderna recipients than those who received Pfizer’s shot, according to a new study.
Canadian researchers analyzed a database and identified 141 cases of myocarditis, a form of heart inflammation, within 21 days of a dose of the Pfizer or Moderna vaccine, both of which utilize messenger RNA (mRNA) technology.
That was compared with an expected number of just 20 cases.
Cases were much higher for young males, as previous studies have found, but were elevated even higher following receipt of a second dose of the Moderna vaccine compared with a second dose of the Pfizer shot….