There has been some interesting research on whether flu vaccines actually make a difference. This article sums up some research on the subject: http://www.theatlantic.com/doc/print.../brownlee-h1n1

This article aboot a Canadian study is particularly interesting, as their survey of 3 million+ people indicated that people who got the vaccine for swine flu were more likely to get it: http://www.theglobeandmail.com/news/...rticle1303330/

Other research has shown that the flu kills obese people disproportionately: http://bloomberg.com/apps/news?pid=2...d=aM.7Dg3Z_msI