In a message dated 7/3/1998 12:00:06 PM Eastern Daylight Time, writes: > I had thought that years ago I had read that you get a better > anamnestic response by giving the 2nd booster later (like just before > middle school) but most states have opted to MMR before KG because of the > higher percentage of kids that are seen by health officials at that time. > I had the same perception, but I'm not sure where I read it. The original recommendation from the AAP was for a 2nd dose before middle school, but the CDC said to do it before Kg, and all the health depts and school boards usually use CDC recommendations. Moshe Adler, MD