The incidence of myocarditis and pericarditis after Covid vaccination is low and most patients make a full recovery, a large international study from Nationwide Children’s Hospital found.
The findings confirm earlier studies that found myocarditis, an inflammation of the heart muscle, and pericarditis, an inflammation of the outer lining of the heart, following Covid vaccination are rare.
The review included more than 800 teens and young adults who developed myocarditis and pericarditis following Covid vaccination.
The heart-related conditions usually occurred within four days after the second dose of a Covid vaccine, the study found.
Daniel Salmon, director of the Institute for Vaccine Safety at Johns Hopkins University, said he would still like to see estimates of myocarditis risk by age, gender, vaccine type and spacing between doses.