We use cookies to help provide you with the best possible online experience. Please read our Privacy Policy for information about which cookies we use and what information we collect on our site. By continuing to use this site, you agree that we may store and access cookies on your device.
A small number of teens and young adults have experienced heart inflammation after receiving mRNA COVID-19 vaccines produced by Pfizer and Moderna, the U.S. Centers for Disease Control and Prevention reports.