Because it's not one of the ones you need to get an exemption for if you skip. And I've never had it just given to my 3 kids. They ask if we want it, I answer, we move on. But then again I've never had any shot just given to my kids. Our doctor is one of those that actually asks before they do anything. You should really try to find one if you ped is just giving your kids vaccines without saying anything to you.