Research into rare myocarditis after COVID-19 vaccination is aimed at understanding a known safety signal, not proving that vaccinated people are secretly ill.
Myocarditis is inflammation of the heart muscle, while pericarditis affects the lining around the heart. Cases have been observed rarely after COVID-19 vaccination, most often in adolescent and young adult males and usually within a week after an mRNA dose. The existence of a rare adverse event deserves careful study.
It also needs proportion. Most vaccinated people do not develop myocarditis, and a headline that says vaccinated individuals may be sick can make a small, specific risk…
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