Mark of the Beast.
Wait for the skin reactions.
Also, wait for the genetic mutations within the next generations of children being born to these people taking the vaccine.
Warning them does nothing.
They will just laugh at you and call you stupid.
So I don't explain my reasonings…matter of fact, if asked…I will just lie: Yeah, of course I took the Mark of the Beast! What do you think I am? Stupid or something?