@chizzoo:Both Moderna's and Pfizer's first Covid shots are fully approved by the FDA. Moderna's is approved for adults only, whereas Pfizer and BioNTech can vaccinate people age 16 and older. Both companies also offer one booster to vaccine recipients under age 50. Older recipients and immunocompromised children as young as 12 can receive a second booster shot.$Moderna, Inc.(MRNA)$