COVID: CDC investigates heart problem in few young vaccine recipients
Earlier this month US regulators expanded authorization of Pfizer and BioNTech's COVID-19 vaccine to children aged 12 to 15.
Vials with Pfizer-BioNTech and Moderna coronavirus disease (COVID-19) vaccine labels are seen in this illustration picture taken March 19, 2021. (photo credit: REUTERS/DADO RUVIC/ILLUSTRATION/FILE PHOTO)ByREUTERSUpdated:
