Out on the West coast, my sister's best friend, a nurse, fought against having to take a flu shot, along with her other medical colleagues (this was in the news a couple of years ago).  Finally a law came into effect that they had to take it. My sister's friend would only take it if it was delivered without mercury.  To get a flu shot without mercury she had to pay an extra $20.

I found it very interesting that these people working in the medical profession (1) didn't think the flu shot worth taking and (2) when forced to, they made sure not to take it with mercury. 

Kind of makes you think...