Heart inflammation after COVID-19 vaccine: Are boys at higher risk?

A new, non-peer-reviewed study concluded that healthy boys aged 12–17 years had a higher hospitalization rate due to heart inflammation after their second mRNA COVID-19 vaccination than the expected hospitalization rate for COVID-19 in that age group. A non-peer-reviewed study reports on scientific research that other experts in the field have not evaluated before publication; it should not guide clinical decision-making. In the case of this paper, there are several issues with the data that the researchers used, which limits the accuracy and applicability of the study’s findings. A CDC analysis of reports of heart inflammation after COVID-19 vaccines is currently under review at a major peer-reviewed journal.