Oh, I know...you've heard all this, right? Wash your hands. Keep your overall health up. Wash your hands.
Wait. I said that twice, heh?
That's ok. People are lazy creatures by nature. They aren't sick now, their family isn't sick now, they aren't gad-abouting through town around sick people. They don't think about washing their hands on a plain ol' regular basis. And washing their counters, keeping a generally tidy-somewhat house, etc.
They'll jump the first doctor's clinic or Walgreen's Pharmacy doling out $5 flu shots every year, though.
Instead of getting some good basic healthy practices engrained in their every day life.
The herds line up one by one.