I do not know why my younger children have not had the Chicken Pox yet. The older children had it before the vaccination came out. Now the younger children do not seem to be getting it. We have been to 1 pox party. Everyone else's children seem to have gotten it. Could they be immune on their own? I am worried someone gave them the vaccination behind my back. I caught the doctor's office trying to do that once and I stopped them. What happened was I was still doing the other vaccinations back then and told them specifically no to the Chicken Pox vaccination, but the nurse came in with it anyway and I saw the word Varicella on it and stopped her. She slammed the shot down and didn't give it to that child. But now I wonder if she did it at some point without my permission.