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
The following is a list of notifiable disease
A notifiable disease is any disease that is required by law to be reported to government authorities. The collation of information allows the authorities to monitor the disease, and provides early war ...
.
CDC TB classification for immigrants and refugees
The
U.S. Citizenship and Immigration Services
U.S. Citizenship and Immigration Services (USCIS) is an agency of the United States Department of Homeland Security (DHS) that administers the country's naturalization and immigration system. It is a successor to the Immigration and Naturalizati ...
has an additional TB classification for
immigrant
Immigration is the international movement of people to a destination country of which they are not natives or where they do not possess citizenship in order to settle as permanent residents or naturalized citizens. Commuters, tourists, and ...
s and
refugee
A refugee, conventionally speaking, is a displaced person who has crossed national borders and who cannot or is unwilling to return home due to well-founded fear of persecution. s developed by the
Centers for Disease Control and Prevention
The Centers for Disease Control and Prevention (CDC) is the national public health agency of the United States. It is a United States federal agency, under the Department of Health and Human Services, and is headquartered in Atlanta, Georgi ...
(CDC). The ''B notification program'' is an important screening strategy to identify new arrivals who have a high risk for TB.
Revised CDC TB Classification system for overseas screening of immigrants and Refugees with Class B1/B2 TB Conditions
. State of Wisconsin, Department of Health Services, Division of Public Health, International Health and Respiratory Disease Unit, Bureau of Communicable Diseases and Emergency Response. September 29, 2009. Accessed 2011-07-27.
{, class="wikitable"
, + United States Immigrant/Refugee TB Classification - revised 2009
! scope="col" , Class
, -
, No TB Classification (Normal)
, -
, Class A TB with waiver, infectious
, -
, Class B1 TB, Pulmonary
, -
, Class B1 TB, Extrapulmonary
, -
, Class B2 TB Latent TB Infection (LTBI) Evaluation
, -
, Class B3 TB, Contact Evaluation
See also
* Tuberculosis radiology
Radiology (X-rays) is used in the diagnosis of tuberculosis. Abnormalities on chest radiographs may be suggestive of, but are never diagnostic of TB, but can be used to rule out pulmonary TB.
Chest X-ray
A posterior-anterior (PA) chest X-ray i ...
for CXR details
* Tuberculosis diagnosis
Tuberculosis is diagnosed by finding ''Mycobacterium tuberculosis'' bacteria in a clinical specimen taken from the patient. While other investigations may strongly suggest tuberculosis as the diagnosis, they cannot confirm it.
A complete medical ...
References
Tuberculosis
Tuberculosis Classification System