Study findings misrepresented to overstate vaccine myocarditis risk

A recent study analyzing severe heart inflammation following COVID-19 vaccination in four Nordic countries found that, while still rare, the risk was increased in young men. Widely shared social media posts have misrepresented the study’s findings to claim that the rare risk is actually widespread. The study explicitly notes that myocarditis after vaccination is rare “even among young males,” and concludes that the risk should continue to be evaluated. The study also found that COVID-19 infection increased the risk of heart inflammation, particularly among adults over age 40.

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The Public Health Communications Collaborative (PHCC) was formed in 2020 to coordinate and amplify public health messaging on COVID-19 and increase Americans’ confidence in guidance from the Centers for Disease Control and Prevention (CDC) and state and local public health officials.

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