Code of Federal Regulations Title 42. Public Health § 42.34.4 Medical notifications

(i) A communicable disease of public health significance;

(ii) A lack of documentation, or no waiver, for an alien who seeks admission as an immigrant, or who seeks adjustment of status to one lawfully admitted for permanent residence, of having received vaccination against vaccine-preventable diseases which shall include at least the following diseases:  Mumps, measles, rubella, polio, tetanus and diphtheria toxoids, pertussis, Haemophilus influenza type B and hepatitis B, and any other vaccinations recommended by the Advisory Committee for Immunization Practices (ACIP) for which HHS/CDC determines, by applying criteria published in the Federal Register, there is a public health need at the time of immigration or adjustment of status. Provided however, that a Class A medical notification shall in no case be issued for an adopted child who is 10 years of age or younger 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 vaccination requirement 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 the requirement;

(iv) Drug abuse or drug addiction. Provided, however, that a Class A medical notification of a physical or mental disorder, and behavior associated with that disorder that may pose, or has posed, a threat to the property, safety, or welfare of the alien or others, shall in no case be issued with respect to an alien having only mental shortcomings due to ignorance, or suffering only from a condition attributable to remediable physical causes or of a temporary nature, caused by a toxin, medically prescribed drug, or disease.