The U.S. drug regulator on Friday added a warning to the literature that accompanies Pfizer-BioNTech and Moderna COVID-19 vaccine shots to indicate the rare risk of heart inflammation after its use.
The U.S. drug regulator on Friday added a warning to the literature that accompanies Pfizer-BioNTech and Moderna COVID-19 vaccine shots to indicate the rare risk of heart inflammation after its use.