Marcin Stepien
Marcin Stepien voted up John McCann's answer

They were lied to.

I am reading the biography of Mark Twain. In 1845 he writes of a measles epidemic that was decimating the children of his town. He said that for awhile there was a funeral everyday.

We tamed measles with vaccines but if herd immunity is not maintained the virus could become as virulent … Read more