The Food and Drug Administration (FDA) has expanded its warnings on Pfizer and Moderna COVID-19 vaccines about the risks of two heart conditions. These manufacturers, the two main COVID-19 vaccine providers,

U.S. health officials have expanded warnings about a rare heart side effect associated with the two leading COVID-19 vaccines.

FRIDAY, June 27, 2025 (HealthDay News) — The U.S. Food and Drug Administration (FDA) has added new warnings to the Pfizer and Moderna COVID-19 vaccines about a rare heart condition that mostly affects young men. The update expands earlier warnings about myocarditis, a type of heart inflammation, The Associated Press reported.