Young Men More Likely to Get Heart Inflammation After Pfizer’s Booster Than COVID-19: Study

A nurse fills up syringes for patients as they receive their COVID-19 booster vaccination during a Pfizer-BioNTech vaccination clinic in Southfield, Mich., on Sept. 29, 2021. Emily Elconin/Reuters

Males under 40 years old are more likely to experience heart inflammation after getting a booster shot of Pfizer’s COVID-19 vaccine than COVID-19 itself, according to a recently published study.

Males in the age group had a myocarditis incidence rate ratio of 7.6 in the 28 days following receipt of a Pfizer booster, researchers with the University of Oxford and other UK institutions found.