Tuberculosis
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TB can be categorized into two different types, according to where it has manifested itself. These two types are described as: Pulmonary Tuberculosis and Non-Pulmonary or (Extra Pulmonary) Tuberculosis.
A Rough Division of Mycobacteria:
| Group: |
Pathogenic Species: |
Usual Site of Infection: |
Some Non-pathogenic Species: |
| Tuberculosis Complex |
M.tuberculosis, M.africanum, M.bovis |
Lungs, Lymph nodes |
M.microti |
| Runyan Group I: Photochromogens |
M.kansasii, M.marinum |
Lungs, Skin |
--- |
| Runyan Group II: Scotochromogens |
M.scrofulaceum |
Lymph nodes |
M.gordonae |
| Runyan Group III: Not Pigmented |
M.avium, M.intracellulare, M.xenopi, M.ulcerans |
Lungs, Bone, Skin |
M.gastri, M.terrae |
| Runyan Group IV: Rapid Growers |
M.fortuitum, M.chelonae |
Lungs, Wounds |
M.phlei, M.smegmatis |
| Not Culturable in vitro |
M.leprae |
Skin, Peripheral Nerves |
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|
Atypical TB
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