This is it: The Changepoint. Can you feel it? The last 30 years have led inexorably to this moment when, for the first time in history, all the candidates remaining in the race for the presidency of the United States feel the need to clarify their stance on the use of vaccines – repeatedly and conflictingly. How did we get to the point where vaccines have become such a highly charged, controversial issue? After all, if vaccines are truly as safe as “they” say they are, wouldn’t anyone want a “get out of sickness free” card?