Some ped's do it at 12, some at 15, and some at 18 months. I highly recommend reading Dr. Sears The Vaccine Book....lots of good info. Here are some good points:
*Separating the vaccines is fine....but they should be given at least 6-12 months from each other, with measles being the LAST one given. Research has shown the vaccine-strain measles in the intestines of children with autism (it appears this part of the vaccine is very hard for little bodies to handle). Dr. Sears recommends giving the measles portion around 3 years old. No point in splitting it up and giving the measles portion first. Also, if you split them up and give them within weeks of each other, you might as well give the MMR all at once since it takes a few months for the vaccine to show side-effects.
*When separating the vaccines, remember that the chemicals and preservatives used to make each vaccine is used in each split-portion. So....splitting them means 3x the extra stuff used to preserve each vaccine.
*You can elect to give the MMR whenever you want. You are the parent and the ultimate decision maker!
*One of the most important things to keep in mind when giving vaccines is HOW MANY you are giving at once. Personally, I think giving 4-6 vaccines in one visit is crazy - especially LIVE vaccines (roto, MMR, chx pox).
Good luck! Again...Dr. Sears book is VERY good - not anti or pro vaccine, very neutral.
