Oh good, I'm just glad that my post didn't come off as flippant. I too am very concerned about the reemergence of diseases that we had more or less eradicated.

Have I ever mentioned that my Father had polio as a child?

In one of my classes one of my classmates said that she didn't believe in vaccines because she thought that it was weakening our ability to fight diseases. My instructor didn't mince any words in informing her that she was wrong, that a vaccine introduces some of the disease into the system for our immune system to build a resistance to, and brought up that we can't appreciate the fear that some of the diseases held just a generation ago.