Federal health experts plan to meet on Wednesday and Thursday to discuss rare but serious cases of myocarditis and pericarditis - inflammation of the heart - reported in about 800 people who have been vaccinated against COVID-19 with the Moderna Inc.
MRNA,
+4.54%
or Pfizer Inc.
PFE,
+1.57%
mRNA vaccines, as of June 12. More than half of those cases occurred in people younger than 30, including about 75 teens, according to data shared by Centers for Disease Control and Prevention officials. Though the cases of myocarditis are considered concerning, these cases are also very rare, occurring out of the roughly 300 million doses that have been administered in the U.S. The CDC's Advisory Committee on Immunization Practices is the same committee that recommends whether authorized or approved vaccines should be given to Americans. It met earlier this year to discuss safety concerns about Johnson & Johnson's
JNJ,
+1.15%
COVID-19 shot.