Trust me on this one, I used to be part of the anti-vaccination crowd back when I was rather impressionable in my late teens and early 20s. I understand that there can be adverse reactions -- a close friend of mine is an example of having an anaphylactic response -- but the "evidence" used to demonize scientists and medical health professionals as a part of some grandiose conspiracy is blatantly false. I also understand how the false sense of knowledge from these crowds can be so alluring, complete with the sensation of acceptance within a community where everyone is a part of the same self-validating ideological circle-jerk.

Of course the FDA lists the possibility of side effects -- shit happens in the real world and the medical community likes to be prepared. Vaccines are constantly in development to ensure that we can make safer and more effective immunizations; no one said vaccines were 100% effective -- only you did. I'd take the negligible risk of adverse reactions over the much higher probability of spreading diseases that carry debilitating consequences.

Also lol@"There's DNA fragments!"
There's DNA in the food you eat, and your own cells, and the bacteria in your mouth employ it as a structural component of dental plaque. Fun fact: Everyone is a mutant of some kind and DNA is everywhere. Humans got their ABO blood group proteins (the glycosyltransferases for the more literate) from bacteria in a horizontal gene transfer event estimated to have occurred around a million years ago. Might sound spooky to those who don't know any better, but it's really not. Stop with the scare tactics that exploit scientific ignorance to hawk a false narrative -- that is, unless your own scientific ignorance has been exploited to get you to join a cause, in which case you are excused. You may not know any different, but some of these people know not to perpetuate such flawed logic and call it "truth".