(ii) is described in section 101(b)(1)(F) , and

(iii) is seeking an immigrant visa as an immediate relative under section 201(b) , if, prior to the admission of the child, an adoptive parent or prospective adoptive parent of the child, who has sponsored the child for admission as an immediate relative, has executed an affidavit stating that the parent is aware of the provisions of subparagraph (A)(ii) and will ensure that, within 30 days of the child's admission, or at the earliest time that is medically appropriate, the child will receive the vaccinations identified in such subparagraph.