heart inflammation

The study results 'suggest that mild asymptomatic myocardial inflammation could be more common than we ever expected,' one doctor said.

U.S. officials kept recommending the shots after myocarditis-related deaths and after the disease was listed as a side effect.

Joseph Keating was only 26 years old when he died of myocarditis on Nov. 12, 2021, four days after receiving his third dose of Pfizer’s COVID-19 vaccine. Mr. Keating had no idea he was experiencing a "rare" heart problem from his vaccination.

Myocarditis is inflammation of the myocardium, the muscular layer of the heart.