What’s the risk of myocarditis for kids?

What is myocarditis and pericarditis?

Myocarditis is a rare condition where there is swelling or inflammation of the heart muscle. Pericarditis is similar, but it affects the thin, fluid-filled sac that surrounds the heart. Symptoms can include chest pain, breathing problems, fevers, and fatigue. Most cases are mild and resolve with rest and time.

What is the chance of getting myocarditis after COVID infection?

In general, viral infections and autoimmune diseases are the among the most common causes of myocarditis. So it is not surprising that COVID can sometimes cause myocarditis. For every 1 million cases of COVID in kids less than 16 years old, about 1,325 will also have myocarditis (0.13%). While this doesn’t seem like much, for kids under 16, COVID-19 infection is associated with a risk of myocarditis 36.8 times higher than those who do not get COVID-19. 

What is the chance of getting myocarditis after the COVID vaccine?

According to the most recent data, for every 1 million fully vaccinated individuals, there are about 5-12 cases of myocarditis or pericarditis above the normal rate. Among young males aged 12-29, there are 60-70 cases above normal per 1 million vaccinated people. Almost all of these cases of vaccine-related myocarditis are mild and resolve with rest and supportive care. 

Is the COVID vaccine worth the risk?

Yes! Experts still agree that getting a COVID vaccine is the best choice for protecting the health of your kids. Even though there is a small chance of getting myocarditis after COVID vaccination (5 to 50 cases per 1 million vaccinations), it is much smaller than the risk of myocarditis after getting COVID (>1,000 cases per 1 million). Vaccinations also prevent hospitalization and death from COVID infection. 

Last update: November 19, 2021, 11:23 am ET

Science review: GSN, HAY