Mycobacterium kansasii is a topic covered in the Johns Hopkins ABX Guide.

To view the entire topic, please or purchase a subscription.

Official website of the Johns Hopkins Antibiotic (ABX), HIV, Diabetes, and Psychiatry Guides, powered by Unbound Medicine. Johns Hopkins Guide App for iOS, iPhone, iPad, and Android included. Explore these free sample topics:

Johns Hopkins Guides

-- The first section of this topic is shown below --

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)

-- To view the remaining sections of this topic, please or purchase a subscription --

Last updated: September 27, 2019