Dionne A, Sperotto F, Chamberlain S, et al. - Researchers described a small case series of children diagnosed with myocarditis after COVID-19 vaccination. In this case series, patients exhibited a benign short-term course; however, uncertainty remains concerning the long-term risks.

• Fifteen children (14 male patients [93%]; median age, 15 years [range, 12-18 years]) were identified who were hospitalized with myocarditis after receipt of the BNT162b2 messenger RNA COVID-19 vaccine for 1 to 5 days.

• Most frequently males were affected after the second vaccine dose.

• As per cardiac magnetic resonance imaging, three patients had ventricular systolic dysfunction, and 12 patients had late gadolinium enhancement.

• No mortality was recorded.

• Normal echocardiogram results were recorded on follow-up 1 to 13 days after discharge in all except 1 patient.