Lead Author: McCullough, et al.
Original date of publication: 11/30/2025
Link: https://esmed.org/MRA/mra/article/view/7078/99193549733
Summary Context
This paper explores the phenomenon of subclinical myopericarditis and heart injury quietly occuring before symptoms, with sudden cardiac arrest as the first sign of disease in some cases.
Comments
This paper investigates “subclinical” myocarditis which is a form of myopericarditis (heart inflammation) caused by COVID-19 mRNA vaccination. It occurs without the typical, noticeable warning signs seen in clinically present myocarditis.
Abstract or Results, Key Passages
“The currently approved COVID-19 mRNA boosters carry a warning for acute, clinically apparent, vaccine-induced myocarditis. This serious condition has resulted in hospitalization and, in well-documented cases, fatalities. However, there is growing concern that long-lasting synthetic mRNA and persistent production of SARS-CoV-2 Spike protein may accumulate in the heart and cause cardiotoxicity over time. Additionally, subtler cardiovascular symptoms, which may not require immediate hospitalization, can also develop. “
Keywords: adverse eventsCardiac eventscovid vaccineinflammationmRNAmyocarditis
Full Author List: P eter A. McCullough, MD, MPH, M.1*Nathaniel Mead, MSc, PhD1, Nicolas Hulscher
