"More telling, for people who reported both flu symptoms and vaccination status, of those who got the flu, three out of four were not vaccinated, while a quarter had gotten their flu shots.
Brownstein cautioned that can't be used as a true measure of this season's vaccine efficacy because of variables in reporting. But the CDC says that in the 2010-2011 flu season, vaccine effectiveness was about 60 percent for all age groups combined."
So, to recap, in this group, a lot of people who had an "immunization" got sick anyway, and overall last year the chances of your getting the flu if you had the "shot" was not that far from "coin flip." Oh--kay.