TB skin test information from trusted sources:
An infectious disease caused by the tubercle bacillus, Mycobacterium tuberculosis, and characterized pathologically by inflammatory infiltrations, formation of tubercles, caseation, necrosis, abscesses, fibrosis, and calcification. It most commonly affects the respiratory system but other parts of the body such as gastrointestinal and genitourinary tracts, bones, joints, nervous system, lymph nodes, and skin may become infected. Fish, amphibians, birds, and mammals (esp. cattle) are subject to the disease. Three types of tubercle bacillus exist, namely, human, bovine, and avian. Man may become infected by any of the three types but in the U.S.A., the human type predominates. Infection usually is acquired from contact with an infected person or an infected cow or trough drinking contaminated milk. Tuberculosis may occur in an acute generalized form (miliary tuberculosis) or in a chronic localized form. In man, the primary infection usually consists of a localized lesion and regional adenitis, these constituting the primary complex. From this state, lesions may heal by fibrosis and calcification and the disease exist in an arrested or inactive stage. Reactivation or exacerbation of the disease or reinfection gives rise to the chronic progressive form. Many varieties of Mycobacteria that previously were thought to be nonpathogenic for man have been found to cause chronic progressive pulmonary disease closely resembling pulmonary tuberculosis. These organisms have been termed anonymous or atypical Mycobacteria. They have been classified into four groups: photochromogens, scotochromogens, nonphotochromagens, and rapid growers.
Tuberculosis Skin Test (PPD Skin Test) Information on MedicineNet.com
Mar 9, 2011 ... The tuberculosis skin test (also known as the tuberculin or PPD test) determines whether a person has developed an immune response to the ...
CDC | TB | Fact Sheets - Tuberculin Skin Testing for TB
The Mantoux tuberculin skin test (TST) is the standard method of determining ... For persons scheduled to receive a TST, testing should be done as follows: ...
Tuberculin Skin Tests
Apr 23, 2009 ... A tuberculin skin test is done to see if you have ever had tuberculosis (TB) (Mycobacterium tuberculosis). It is done by putting a small ...
Mantoux test - Wikipedia, the free encyclopedia
It is one of the two major tuberculin skin tests used in the world, largely replacing ... If a person has had a history of a positive tuberculin skin test, ...
Tuberculosis (TB) is a contagious bacterial infection that most frequently affects the lungs. In addition, TB involves other areas of the body, such as the lymph nodes, genitourinary tract, bones, joints, the membranes covering the brain (meninges), and the membranes covering the digestive organs (peritoneum).
If you are diagnosed with pulmonary tuberculosis (TB) you will be contagious until you have been receiving treatment for between two to three weeks.