Index/Topics/Vaccine-associated myocarditis

Vaccine-associated myocarditis

The risk of myocarditis associated with COVID-19 vaccination, particularly in young males.

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Jan 28, 2026
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How do myocarditis risks compare after SARS-CoV-2 infection versus mRNA vaccination by age and sex in large cohort studies?

Large cohort meta-analyses and population studies find that is, on average, substantially higher after infection than after mRNA COVID‑19 vaccination, but that risk varies sharply by age, sex, vaccine...

Jan 26, 2026
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What peer‑reviewed evidence exists about myocarditis risk after mRNA COVID-19 vaccines, and how does that risk compare to infection?

Peer‑reviewed systematic reviews, population cohort studies and clinical reviews consistently find that is a rare event concentrated in younger males, usually after the second dose, and that myocardit...

Jan 8, 2026
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What transient changes in white blood cell counts occur after mRNA COVID vaccination and their typical duration?

Transient, generally mild shifts in peripheral white blood cell (WBC) populations have been reported after mRNA COVID-19 vaccination, most commonly modest, short-lived rises in some cell types (neutro...

Jan 8, 2026

What are the proposed mechanisms and evidence linking vaccine-derived spike to myocarditis and thrombotic events?

A set of converging hypotheses and small clinical studies propose that spike protein produced after COVID-19 mRNA or vector vaccination can, in rare cases, contribute to myocardial inflammation and th...

Jan 8, 2026

How many people have died from getting the covid vaccine

There is no single, verifiable global tally of people who have died as a direct and proven result of receiving a COVID-19 vaccine; high-quality population studies and health agencies report no signal ...