More than a year after the FDA added heart inflammation warnings to COVID-19 mRNA vaccines — amid the second academic year of campus vaccine mandates on a demographic at higher risk of severe adverse events — vaccine makers are finally studying the long-term consequences of vaccine-induced myocarditis and pericarditis.
Moderna already has two trials running, while Pfizer said its first trial will start “in the next couple months” and include up to 500 teenagers and young adults under 21, NBC News reported last week. Neither has disclosed the studies on their websites.
The CDC isn’t much further ahead in studying long-term post-vaccination harm. In late September, the agency started contacting people who meet the case definition of myocarditis and have been reported to the Vaccine Adverse Events Reporting System.
While an “independent entity” should be reviewing long-term consequences, it’s “puzzling” why Pfizer and Moderna waited so long to follow through on the FDA’s approval conditions, said MIT professor Retsef Levi, lead author of a study on post-vaccination “emergency” heart problems in 16-39 year-olds in highly vaccinated Israel.
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