DoD Confirms: Heart Inflammation Cases Linked to COVID-19 Vaccines

A new study of U.S. service members found higher than expected rates of heart inflammation following receipt of COVID-19 vaccines. It’s a finding Defense Department researchers say should call attention to the condition, known as myocarditis, as a potential side effect of the immunizations.

In an article published Tuesday in JAMA Cardiology, U.S. Army, Navy and Air Force physicians described 23 cases of myocarditis in previously healthy males who developed the condition within four days of receiving a COVID-19 vaccine.

Physicians would have expected to find eight or fewer cases of myocarditis among the 436,000 male military members who received two mRNA shots, according to the study. But 20 military members developed inflammation after their second dose, including 14 after the Moderna shot and six after the Pfizer shot. Three developed the condition after their first vaccine.

All were previously healthy and physically fit and none showed any evidence of having acute COVID-19 illness or any other infection, according to the report.

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