Johns Hopkins HIV Guide
Mycobacterium kansasii
MICROBIOLOGY
- Mycobacterial species
- Slow grower (2-6 weeks for positive with liquid media), photochromogen.
- AFB staining may show beaded characteristics [Fig].
- DNA analysis suggests there may be 5-7 subspecies.
- Subtype I appears to be responsible for most human infection.
- M. tuberculosis and M. kansasii can occur together: cultures positive for M. kansasii should be incubated for prolonged periods to exclude M. tuberculosis, which grows slightly slower than M. kansasii.
- Reservoir appears to be water (tap water, standing water, saltwater) with likely infection via aerosol.
- No human-to-human or animal-to-human transmission (with the exception of unusual case reports)
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Last updated: January 29, 2020
Citation
Hoffmann, Christopher J. "Mycobacterium Kansasii." Johns Hopkins HIV Guide, 2020. Johns Hopkins Guides, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545138/all/Mycobacterium_kansasii.
Hoffmann CJ. Mycobacterium kansasii. Johns Hopkins HIV Guide. 2020. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545138/all/Mycobacterium_kansasii. Accessed December 1, 2023.
Hoffmann, C. J. (2020). Mycobacterium kansasii. In Johns Hopkins HIV Guide https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545138/all/Mycobacterium_kansasii
Hoffmann CJ. Mycobacterium Kansasii [Internet]. In: Johns Hopkins HIV Guide. ; 2020. [cited 2023 December 01]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545138/all/Mycobacterium_kansasii.
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