Does anyone know how the immunizations work? My DS is looking through his CGAS paperwork that needs to be completed and it has an immunization form in there that has to be filled out by the doctor. My son has always gotten his shots when he was supposed to as scheduled. He received his Hep A and Hep B when he was younger as well as several other shots. Does this mean he has to get all these shots again? Or is the doctor just supposed to record the dates he had them the first time? We are confused.