injecting yourself and your kids with experimental drugs is up to you.
Interesting observation, I have several older dictionary’s and none of them use the term “synthetic” or “synthesized” in there definitions of “vaccine”.
It appears that some online dictionary’s have added those words to there definitions. one used the term “(such as a strand of synthesized RNA)”.
Where in my older M.Webster it says “such as a bacterium or virus or one of its components or products such as a protein or toxin”.