Mycobacterium kansasii
Mycobacterium kansasii is a topic covered in the Johns Hopkins HIV Guide.
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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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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 Guide, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545138/3.0/Mycobacterium_kansasii.
Hoffmann CJ. Mycobacterium kansasii. Johns Hopkins HIV Guide. 2020. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545138/3.0/Mycobacterium_kansasii. Accessed August 17, 2022.
Hoffmann, C. J. (2020). Mycobacterium kansasii. In Johns Hopkins HIV Guide https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545138/3.0/Mycobacterium_kansasii
Hoffmann CJ. Mycobacterium Kansasii [Internet]. In: Johns Hopkins HIV Guide. ; 2020. [cited 2022 August 17]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545138/3.0/Mycobacterium_kansasii.
* Article titles in AMA citation format should be in sentence-case
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T1 - Mycobacterium kansasii
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Y1 - 2020/01/29/
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