Myocarditis Diagnoses Spiked in Military in 2021, New Data Show

U.S. Marines in Kin, Japan, in an undated image. Carl Court/file/Getty Images

The rate of myocarditis spiked in the military in 2021, newly disclosed data show.

Diagnoses of myocarditis, a form of heart inflammation, jumped 130.5 percent in 2021 when compared to the average from the years 2016 to 2020, according to data from the Defense Medical Epidemiology Database (DMED).