My son is 4 1/2 and we still have not given it to him. I'm terrified! I'm trying to figure out at what age is a "safe" age to give it to him?? He has some speech/language delays/articulation errors as it is, and I'm so afraid that this shot will cause more problems. I expressed my concerns to his pediatrician, and he said he would sign off in delaying the vaccine if that is my request (so that he can still start kindergarten next fall). We have also gone so far as to get a religious exemption from the MMR and Varicella (because of the way that they are made), but now my understanding is that you can only use the religious exemption on an all or none basis. When my DH got the exemption they never even asked him if our son has received any vaccines, so I'm not sure about that one. Anyway....if we are forced to comply, would it be safe for him to receive the MMR now? If not, we will homeschool. Any opinions????