There haven't been "plenty of studies" it's fairly new. And the regular flu shot is terrible for you. It has mercury in it and the metal never leaves your body. It builds up and has been proven to cause many many ailments.

I don't lose sleep over it either XD I just respect my body way to much to even consider taking the junk. My immune system is strong, so I have no need to put toxic chemicals in my body, because every vaccine has something really bad in it.

They even say (studies are still going on about it) that all the vaccines infants get these days are raising the numbers of autistic kids. There is no doubt autism is growing, researches are just trying to prove/disprove it has to do with the vaccines.