The results suggest that the vaccine is 100% effective at preventing the COVID-19 virus in this age group.
If you've ever had an immediate or severe allergic reaction to any ingredient in a COVID-19 vaccine, the CDC recommends not getting that specific vaccine.
Also, the genetic material that's delivered doesn't become part of your DNA.
If you or your child develops myocarditis or pericarditis after a dose of an mRNA COVID-19 vaccine, the CDC recommends avoiding getting another dose of any COVID-19 vaccine.
A second booster dose of an mRNA COVID-19 vaccine is recommended for certain people who have a weakened immune system and people age 50 or older.
Centers for Disease Control and Prevention.