The flu vaccine is the biggest medical load of crap of the decade.
Why? Influenza has billions of variations, and it's impossible to protect yourself from all of them. Besides, its natural. Need I say more? My aunt got one of those shots a few years ago, and she was sick for months. Vaccinating against the flu is like vaccinating for the common cold - it's pointless, doesn't work, and has many negative effects on things.
As for me, I'v got some kind of respiratory thing going on.