Can mRNA vaccines cause inflammation of the heart?

Question: 

Can mRNA vaccines cause inflammation of the heart?  

Answer: 
In rare cases, people have experienced myocarditis (inflammation of the heart muscle) and pericarditis (inflammation of the tissue surrounding the heart) after getting an mRNA COVID-19 vaccine. In Canada, this has occurred at a rate of about 1.7 cases per 100,000 doses of Moderna vaccine and 1.1 cases per 100,000 doses of Pfizer-BioNTech vaccine.
 

They have occurred more often in males 12-29 years, and after the second dose. The available short-term follow-up data shows that the majority of affected people, even if hospitalized, experience relatively mild illness, respond well to conservative treatment, and recover quickly. It's important to note that the risk of heart complications, including myocarditis, is much greater following COVID-19 infection than following vaccination. Read more: Can mRNA vaccines cause inflammation of the heart (myocarditis and pericarditis)?

Date last reviewed: 
Monday, Aug 08, 2022