I see you're not keeping up to date.
In fact, when the US government couldn't push the entire batch of flu vaccine they ordered produced, they then quietly ordered that vaccine provided the next year, instead of the usual process.
This year you had your choice of the trivalent or quadrivalent vaccines, both A & B subtypes.
http://flu.ca/will-the-2013-2014-flu-season-be-worse-than-last-year/?wpmp_switcher=mobile
http://americancountrymd.com/flu-vaccines-fail-the-eldery/
http://www.medicalnewstoday.com/articles/96913.php
https://healthmasters.com/blog/truth-about-flu-shots-do-work
You asked, so there are a few. I work in a large hospital, and this information floats around, with little in the way of documentation available.
Yes, I am aware of how researchers get together and have a group guessing session.