Diseases
Under United States law communicable diseases of public health significance include:

  • Cholera
  • Diphtheria
  • Tuberculosis, infectious
  • Plague
  • Smallpox
  • Yellow Fever
  • Viral Hemorrhagic Fevers, including Ebola, Lassa, Marburg, Crimean-Congo
  • Severe acute respiratory illnesses capable of transmission to other persons and likely to cause mortality.

Physical or Mental Disorders
With regard to physical or mental disorders, answer "Yes" to this question if:

  • You currently have a physical or mental disorder and a history of behavior associated with the disorder that may pose or has posed a threat to your property, safety or welfare or that of others; or
  • You had a physical or mental disorder and a history of behavior associated with the disorder that has posed a threat to your property, safety or welfare or that of others and the behavior is likely to recur or lead to other harmful behavior. Answer "No" if:
    • You currently have no physical or mental disorders; or
    • You have or had a physical or mental disorder without associated behavior that may pose or has posed a threat to your property, safety or welfare of that of others; or
    • You currently have a physical or mental disorder with associated behavior, but that behavior has not posed, does not currently pose nor will pose a threat to your property, safety or welfare or that of others; or
    • You had a physical or mental disorder with associated behavior that posed a threat to your property, safety or welfare or that of others, but that behavior is unlikely to recur.

Drug Abusers and Drug Addicts
Under United States law persons may not be admissible if they have been determined to be a drug abuser or drug addict.
For further information refer to § 212(a)(1)(A) of the Immigration and Nationality Act, 8 U.S.C. § 1182(a)(1)(A), and corresponding regulations in the Code of Federal Regulations.