Mycobacterium kansasii

Christopher J. Hoffmann, M.D., M.P.H.
Mycobacterium kansasii is a topic covered in the Johns Hopkins ABX Guide.

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

Pediatrics Central™ is an all-in-one application that puts valuable medical information, via your mobile device or the web, in the hands of clinicians treating infants, children, and adolescents. Explore these free sample topics:

Pediatrics Central

-- 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