One in 35 people who received the COVID-19 mRNA booster vaccinations had vaccine-associated myocardial injury, according to a peer-reviewed, industry-independent study from the University of Basel.
The study, which is due to be published in the highly accredited open-access journal of the Heart Failure Association of the European Society of Cardiology, aimed to identify the incidence rate and symptoms of myocardial injury – inflammation of the heart muscle – after mRNA booster vaccinations.