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If a case is more severe, it may require a few days in the hospital for medication and monitoring. Most cases are go away on their own, without long-term effects. Pericarditis is a swelling and irritation of a heart membrane called the pericardium.įor young people, these conditions are often the result of a viral infection, including a common summer infection called coxsackie virus. Myocarditis is an inflammation of a heart muscle called the myocardium.
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It’s important to keep in mind that these same heart conditions also occur in young people who are not vaccinated – and appear more likely to be caused by COVID-19 infection than from getting the vaccine.īoth conditions affect how the heart functions. These cases have been rare – just a handful out of every million vaccinations – and most have been mild and gone away on their own or with medical care. Symptoms usually appear within a week after a dose of the Pfizer or Moderna COVID-19 vaccines – most commonly, the second dose. Most cases have been reported in males in their teens or 20s. Since June, the CDC has been investigating rare cases of myocarditis and pericarditis in vaccinated young people. Subscribe Why have I been hearing about heart problems and the COVID-19 vaccine? Want more articles like this from pediatric experts you trust?