I hear too much paranoia and misinformation about Vaccinations, and general hygene and illness avoidance.
The few regular Watchers I have, I don't think I have to teach how, say, that HIV cannot normally be transmitted by a toilet seat (and the exceptions, you'd be crazy to sit on to begin with), so I am speaking more of what I hear outside when I randomly eavesdrop on people.

Take the H1N1 stuff of the past few months: yes, I too got the vaccination, and I feel fine, even not being an at-risk person for catching it to begin with (reportedly, some 10% of my campus is infected. *shrugs*).

For example, the George Carlin Institute of Physical Heath suggest swimming in raw sewage to give your immune system experience in fighting off diseases. I'm clean and neat, but not a freak about it, and occasionally go stay with friends who're less tidy (Vaccume your damn room, rabbit! *shakes fist*).

Sure, vaccinations aren't the same thing as first-hand experience resisting pathogens, but in the game of life, there are no save points (*sigh* how I wish there were), one-ups, or continues. So, to naysayers of vaccinations, I have just one word to say:

NOCLIP