The final HITECH Omnibus Rule expanded some of HIPAA's original requirements, including changes in immunization disclosures. As a result, where states require immunization records of a minor prior to admitting a student to a school, a covered entity is permitted to require written authorization from a custodial parent before disclosing proof of the child's immunization to the school. O allow the minor to authorize the disclosure of the proof of immunization to the school. O allow school officials to authorize immunization disclosures on behalf of a child attending their school. O simply document a written or oral agreement from a parent or guardian before releasing the immunization record to the school