Cases of Myocarditis/Pericarditis after Receipt of mRNA Vaccines
On May 17th, the CDC Vaccine Safety Technical (VaSt) Work Group released a statement on reports of myocarditis following mRNA vaccines. VaST concluded that there are relatively few reports of myocarditis to date and that these cases seem to occur:
- predominantly in adolescents and young adults,
- more often in males than females,
- more often following dose 2 than dose 1, and
- typically within 4 days after vaccination.
Please report cases of myocarditis or pericarditis after vaccination promptly to the U.S. Vaccine Adverse Events Reporting System (VAERS).