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Which kind of hypersensitive reaction is the result of Mycobacterium tuberculosis?

User Tim Ramsey
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Final answer:

Mycobacterium tuberculosis causes a Type IV hypersensitive reaction known as delayed-type hypersensitivity, detectable through the Mantoux tuberculin skin test.

Step-by-step explanation:

The type of hypersensitive reaction resulting from Mycobacterium tuberculosis is a Type IV hypersensitivity, specifically a delayed-type hypersensitivity (DTH). This reaction is cell-mediated, involving the T-helper 1 (TH1) cytokine-mediated inflammatory response, which can take one to two days after secondary exposure to reach its maximal level. The Mantoux tuberculin skin test is a classical example of this, where a positive test is indicated by a raised red area called an induration, a sign of cellular immune response indicative of previous exposure to the bacteria.

User Henry Dang
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