CDC says heart inflammation cases were higher than expected in 16- to 24-year-olds after second COVID vaccine shot, but still rare

The number of cases of a heart inflammation condition in 16- to 24-year-olds was higher than expected after they received their second dose of Pfizer’s or Moderna’s Covid-19 vaccines, the CDC said. There have been 275 reported cases of myocarditis or pericarditis, which are inflammation conditions involving the heart, in people ages 16 to 24 as of May 31, according to a CDC presentation.