T.C.
I do not think it is correct that the counties have preservative free for over three. They are saving those few vaccines for children under three and pregnant woman. The reason the majority has the preservative is that in order to get the vaccine in everyones hands as quickly as possible they are packaging them in multi-dose vials and a nurse has to pull the dose into a syringe. In order to keep the vaccine germ free it needs the small preservative. I was concerned also, however I read many what seemed to be good logical fact based articles and the amount of mecury is so minute it doesn't even read.
My son has asthma and I decided the two shots were worth the risk verses a very nasty flu bug that has landed children in the hospital.
Considering how many vaccines these kids get, I agree just to be extra cautious to leave the mercury out...but in this instance it wasn't feasible to get such a huge amount out so quickly.
Just sharing my own thoughts.......