RNA is a middle man between the DNA and the protein production
Changing your DNA would change what proteins your body produces
Injecting RNA would change what proteins your body produces
Viruses are either RNA or DNA with a shell around it
Remove the shell and you just have RNA or DNA for a virus
A RNA vaccine is the RNA code for a portion of a virus or a whole virus
The RNA vaccine can be a virus without a shell
If they do a RNA vaccine "correctly" it is a virus fragment