By Katherine Fung
Newsweek
June 24, 2021
During a Wednesday meeting held by the CDC’s Advisory Committee on Immunization Practices, officials announced that there was a higher-than-expected number of reports of myocarditis or pericarditis in those aged 16 to 24 who received the mRNA vaccines.
Myocarditis is inflammation of the heart muscle and pericarditis is the inflammation of the lining around the heart. Symptoms include chest pain and shortness of breath, which typically develop a few days after receiving the shot.
According to the CDC presentation, men under 30 make up the bulk of the cases and most cases appear to be mild.