it reacts with a strand of DNA to form a response from your cells to attack the spike protein in the virus. As I said it gives a recipe that the body uses to makes a defence ( or attack ) on the virus. However we do not know what other cells in the body it will also attack yet?You just said the vaccine gives "the recipe to your DNA to make the response to the virus."
So your DNA is acting as your immune system?
using your brakes can prevent you crashing your car but you should still wear a seat belt.Anyway Boris says its the lockdowns that stop infections not the vaccine.
You do realise you wont live for ever?using your brakes can prevent you crashing your car but you should still wear a seat belt.