Sounds like she had reservations about mercury, a preservative in fragile vaccines that needed to be transported safely around the world.  No harm has ever been found from that minute mercury content. The point is, has she ever come out and said that vaccination is safe for 99.9% of children?  Why not?  In refusing to do so she has alarmed intelligent persons who want to see kids vaccinated.  It is crucial to community health.  A large number of parents in certain regions refuse vaccination and put the community's children at risk.  It's an important issue that people want to know her stand on.

Neither the Green candidate nor the Libertarian candidate have a chance at the presidency.  Sanders ran as a Democrat and was able to swing the party platform to the left, but neither Stein nor Johnson will have any effect on policy this cycle.  Your vote is wasted on them.  I don't want to waste mine.