The CDC Advisory Committee on Immunization Practices (ACIP) on June 23 identified a “likely association” between the two mRNA vaccines from Pfizer and Moderna and cases of myocarditis and pericarditis. The meeting follows an U.S. Food and Drug Administration (FDA) advisory committee meeting earlier this month on the topic and FDA officials attending the CDC meeting indicated that a warning statement in fact sheets for both health care providers and vaccine recipients would likely be an appropriate response.

More than 150 million people have received either the Pfizer or Moderna vaccine, making the 1,200-plus documented cases rare. Information presented at the meeting summarized reports describing the illness predominantly in males under 30 following the second dose of an mRNA vaccine, with most cases appearing to resolve themselves. ACC Advocacy continues to follow the discussion and will provide more information as it becomes available. Stay on top of the latest COVID-19 clinical and policy guidance on ACC’s COVID-19 Hub at ACC.org/COVID19.

Clinical Topics: COVID-19 Hub, Heart Failure and Cardiomyopathies, Pericardial Disease, Prevention

Keywords: ACC Advocacy, Coronavirus, COVID-19, Advisory Committees, Myocarditis, United States Food and Drug Administration, RNA, Messenger, Vaccines, Vaccination, Immunization, Pericarditis, Centers for Disease Control and Prevention, U.S.

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