Tuberculin
A protein extracted from Mycobacterium tuberculosis that is used in a skin test to determine if a person has been exposed to tuberculosis. The tuberculin preparation in most common use today is purified protein derivative (PPD) tuberculin. PPD is injected (or multiple-punctured) into the skin. If a reaction is seen at and around the site of injection, the test is positive. The PPD tuberculin test done by intradermal injection is also known as the Mantoux test.
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A highly contagious infection caused by the bacterium called Mycobacterium tuberculosis. Abbreviated TB. Tubercles (tiny lumps) are a characteristic finding in TB. Diagnosis may be made by skin test, which if positive should will be followed by a chest X-ray to determine the status (active or dormant) of the infection. Tuberculosis is more common in […]
- Tuberculosis, antibiotic-resistant
A variant of tuberculosis (TB) that is not affected by one or more of the antibiotics normally used to treat it. If the strain of TB is unaffected by more than one medication, it is called multi-drug-resistant (MDR) TB. Extensively drug-resistant tuberculosis (XDR TB) is a rare type of MDR TB that is resistant to […]
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A type of tuberculosis affecting birds, caused by Mycobacterium avium, which may be communicated to other animals and humans.
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The presence of Mycobacterium tuberculosis infection without a positive chest X-ray. Treatment is not mandatory for dormant tuberculosis (TB), as with active TB, but it is a good idea because the bacterium could become active later. Treatment involves a course of antibiotics and vitamins.
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Tuberculosis (TB) that does not respond to standard drug treatment. Drug-resistant TB has become a very serious problem in recent years in certain populations. For example, TB resistant to the drug isoniazid (INH) is seen among patients from Southeast Asia. The reason for this INH resistance is not quite clear. However, the presence of INH-like […]