Tuberculosis classification


 * Main article: Tuberculosis

Tuberculosis classification system
The current clinical classification system for tuberculosis (TB) is based on the pathogenesis of the disease.

Health care providers should comply with local laws and regulations requiring the reporting of TB. All persons with class 3 or class 5 TB should be reported promptly to the local health department. See list of notifiable diseases.

CDC TB classification for immigrants and refugees
The U.S. Citizenship and Immigration Services has an additional TB classification for immigrants and refugees developed by the Centers for Disease Control and Prevention (CDC). The B notification program is an important screening strategy to identify new arrivals who have a high risk for TB.
 * Class B3 (TB, old or healed; chest X-ray with calcification) has been omitted from the classification scheme because it has not been found to be associated with active TB.