Related Experiment Video
Updated: Oct 1, 2025

Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling
Published on: April 7, 2015
Cardiac Complications Associated with COVID-19, MIS-C, and mRNA COVID-19 Vaccination
Stephanie E Chin1,2,3, Sejal M Bhavsar4,5, Andrew Corson6
1K. Hovnanian Children's Hospital at Jersey Shore University Medical Center, Neptune, NJ, USA. schin@alpertzalescastro.com.
COVID-19 vaccination is recommended for children over 5. Vaccine-related myocarditis is mild and treatable, unlike severe cardiac issues from COVID-19 infection or MIS-C.
Area of Science:
- Pediatric Medicine
- Vaccinology
- Cardiology
Background:
- COVID-19 vaccination is approved for children over 5, yet uptake is low.
- Vaccine hesitancy is fueled by misinformation and concerns about myocarditis.
- Myocarditis following COVID-19 infection or MIS-C poses greater cardiac risks than vaccine-associated myocarditis.
Purpose of the Study:
- To compare the risks of cardiac complications from COVID-19 infection versus mRNA COVID-19 vaccination in children.
- To address vaccine hesitancy by clarifying the safety profile of pediatric COVID-19 vaccination.
Main Methods:
- Comparative analysis of clinical outcomes.
- Review of existing literature on myocarditis and cardiovascular complications.
- Assessment of disease severity and prognosis.
Main Results:
- Vaccine-associated myocarditis presents mildly, is treatable, and has a good prognosis.
- Acute COVID-19 and MIS-C are linked to more severe and frequent cardiac complications, including myocarditis and myocardial injury.
- COVID-19 infection poses a significantly higher risk for severe cardiovascular outcomes in children.
Conclusions:
- COVID-19 vaccination is a safer alternative to natural infection regarding cardiac complications.
- Widespread pediatric vaccination can mitigate severe illness, MIS-C, and associated disruptions.
- COVID-19 vaccination is strongly recommended for all eligible pediatric age groups.
Related Concept Videos
Myocarditis III: Medical Management
Myocarditis I: Introduction
Coronary Artery Disease III: Clinical Manifestations
Cardiomyopathy I: Introduction and Classification
Myocarditis II: Clinical Features and Diagnostic Tests
Mitral Regurgitation II: Clinical Features and Diagnostic Tests

