Earlier quoted context omitted.
Part of the problem there is the perception that those diseases aren't serious (and in cases like chicken pox, this can even be somewhat true). No such perception exists with Ebola, I'd say.
As someone who's had an attack of shingles, saying that chicken pox isn't serious, is bullshit.
I have a medically sensitive daughter and the folks who go "flu's not that bad, just get it and move on" drive me insane.