What are the differences between the classes of conditions for incoming immigrants?
Class A Conditions are illnesses of public health importance that prohibit a person from entering the United States due to the infectious nature of these diseases. These conditions include the following:
- Active or infectious tuberculosis
- Untreated syphilis
- Untreated chancroid
- Untreated gonorrhea
- Untreated granuloma inguinale (Donovanosis)
- Untreated lymphogranuloma venereum (Climatic bubo)
- Hansen’s disease (Infectious Leprosy)
- Addiction or abuse of specific substance without harmful behavior
- Mental disorder with harmful behavior or history of such behavior, along with likelihood that behavior will recur.
- Quarantinable diseases designated by any Presidential Executive Order: cholera, diphtheria, infectious tuberculosis, plague, smallpox, yellow fever, viral hemorrhagic fevers, severe acute respiratory syndrome (SARS), and novel influenza (e.g. pandemic flu).
- Events that are reportable as a public health emergency of international concern to the World Health Organization under the International Health Regulations of 2005: polio, smallpox, SARS, novel/pandemic influenza (flu), and other public health emergencies of international concern.