Another factor is that these misguided folks are claiming that the vaccine -- which has been subject to numerous clinical trials -- is not safe, despite a grand total of zero reported serious adverse reactions anywhere in the world. At the same time, flu vaccines are actually quite dangerous, and every year do kill a small number of people. In the grand scheme of things, the number is small in relation to the number of lives saved, but the differential in risk is significant.
"Zero" reactions?
http://www.freerepublic.com/focus/news/1778223/posts?page=70#70