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A case-control study showed an increased risk of myocarditis after COVID-19 vaccination with a messenger RNA vaccine compared to an inactivated virus vaccine.

25 Jan, 2022 | 09:43h | UTC

Carditis After COVID-19 Vaccination With a Messenger RNA Vaccine and an Inactivated Virus Vaccine: A Case–Control Study – Annals of Internal Medicine

News release: BNT162b2 COVID-19 vaccine associated with increased risk of carditis – American College of Physicians


[Preprint] Risk of myocarditis following sequential COVID-19 vaccinations by age and sex.

Risks of myocarditis, pericarditis, and cardiac arrhythmias associated with COVID-19 vaccination vs. SARS-CoV-2 infection.

Case series with 139 adolescents and young adults with suspected myocarditis following mRNA vaccination showed most cases had a mild clinical course and rapid resolution of symptoms.

Heart-inflammation risk from Pfizer COVID vaccine is very low.

Large cohort study with over 2.5 million individuals showed the incidence of myocarditis after the Pfizer vaccine was 2.13 cases per 100,000 persons.

Study with over 5.1 million vaccinated individuals showed the incidence of myocarditis after the receipt of the Pfizer vaccine was low and more common after the second dose in young male recipients.

Large Observational study shows Pfizer Covid vaccine is mostly safe but is associated with increased risk of myocarditis, adenopathy, appendicitis, and herpes zoster.


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