Damage to the heart is more common than thought after receipt of Moderna’s COVID-19 booster, a new study indicates.
One in 35 health care workers at a Swiss hospital had signs of heart injury associated with the vaccine, mRNA-1273, researchers found.
“mRNA-1273 booster vaccination-associated elevation of markers of myocardial injury occurred in about one out of 35 persons (2.8%), a greater incidence than estimated in meta-analyses of hospitalized cases with myocarditis (estimated incidence 0.0035%) after the second vaccination,” the researchers wrote in the paper, published by the European Journal of Heart Failure.
In a generally healthy population, the level would be about 1 percent, the researchers said.
The group experiencing the adverse effects was followed for only 30 days, and half still had unusually high levels of high-sensitivity cardiac troponin T, an indicator of subclinical heart damage, at follow-up…