A recent study published in the medical journal Cureus found that 27.11% of those who received COVID-19 mRNA vaccines in Saudi Arabia had "cardiac complications."
Moderna recently announced that it is developing more mRNA vaccines targeting Epstein-Barr virus (EBV), Varicella-zoster virus (VZV, chickenpox, and shingles), and Norovirus.
Toddlers and young children have a greater risk of seizing after receiving the COVID-19 vaccine, according to a study from the U.S. Food and Drug Administration (FDA).