Post-Vax Heart Inflammation Probed

The CDC is investigating rare reports of heart inflammation in young people soon after COVID-19 vaccination—though the number of cases of myocarditis is small and has not exceeded expected baseline rates, Axios reports.
Most of the several dozen cases reported primarily in teenagers and young adults have been mild, but the CDC advisory panel felt it was important to share the reports with providers.


  • Symptoms typically appeared within 4 days post mRNA-vaccination

  • More cases reported in men than women

  • Cases most often followed dose #2

It’s not yet clear whether there is evidence that the vaccines caused the heart condition, The New York Times reports, and experts noted it is possibly coincidental. 

“It’s more likely for something like that to happen by chance, because so many people are getting vaccinated right now,” said Celine Gounder of New York’s Bellevue Hospital Center.

Key takeaway: The potential side effect of myocarditis “pales" in comparison to the potential COVID-19 risks—which can include myocarditis.

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