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Risk of Myocarditis or Pericarditis With High-Dose vs Standard-Dose Influenza Vaccine

JAMA Network Open 10.1001/jamanetworkopen.2025.36889

August 30, 2025 at 8:00 AM EDT

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This prespecified secondary analysis of a randomized clinical trial investigates the risk of myocarditis or pericarditis with high-dose vs standard-dose inactivated influenza vaccine among older adults.

Corresponding Author: Tor Biering-Sørensen, MD, MSc, MPH, PhD, Center for Translational Cardiology and Pragmatic Randomized Trials, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Gentofte Hospitalsvej 8, 3.th., 2900 Hellerup, Denmark (tor.biering@gmail.com).

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