Nature Medicine
Volume 28 Issue 2, February 2022
https://www.nature.com/nm/volumes/28/issues/2

Article | 14 December 2021 | Open Access
Risks of myocarditis, pericarditis, and cardiac arrhythmias associated with COVID-19 vaccination or SARS-CoV-2 infection
A self-controlled case series using individual-patient-level data from over 38 million people aged 16 years and over, reveals an increased risk of myocarditis within a week of receiving a first dose of ChAdOx1, BNT162b2 and mRNA-1273 vaccines, which was further increased after a second dose of either mRNA vaccine. SARS-CoV-2 infection was associated with even greater risk of myocarditis, as well as pericarditis and cardiac arrhythmia.
Martina Patone, Xue W. Mei, Julia Hippisley-Cox