Type your tag names separated by a space and hit enter


Michael Melia, M.D., Paul G. Auwaerter, M.D.
Nocardiosis is a topic covered in the Johns Hopkins HIV 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 --


  • Member of aerobic actinomycetes group. Grows slowly on media. Appear as branching, beaded filamentous Gram-positive rods.
  • Variably acid fast due to presence of intermediate mycolic acids in cell wall, distinguishes from Actinomyces. May produce sulfur granules, especially in mycetomas.
  • Ubiquitous in environment. Most infections acquired by inhalation or direct inoculation.
  • Many (possibly all) isolates previously identified as "N. asteroides" now known to have been mis-identified based on current lab standards; type strain of N. asteroides does not appear to have been recovered from recent clinical isolates.
  • Human pathogens include N. abscessus (former N. asteroides Type I drug susceptibility pattern), N. brevicatena/paucivorans complex (Type II), N. nova complex (III), N. transvalensis complex (IV), N. farcinica (V; more virulent), and N. cyriacigeorgica (VI), as well as N. brasiliensis (more common in tropics and actinomycetoma) and N. pseudobrasiliensis.
  • Each species/complex generally has stereotyped antimicrobial susceptibility patterns.

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

Last updated: November 29, 2015


Melia, Michael, and Paul G Auwaerter. "Nocardiosis." Johns Hopkins HIV Guide, 2015. Johns Hopkins Guide, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545150/all/Nocardiosis.
Melia M, Auwaerter PG. Nocardiosis. Johns Hopkins HIV Guide. 2015. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545150/all/Nocardiosis. Accessed July 22, 2019.
Melia, M., & Auwaerter, P. G. (2015). Nocardiosis. In Johns Hopkins HIV Guide. Available from https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545150/all/Nocardiosis
Melia M, Auwaerter PG. Nocardiosis [Internet]. In: Johns Hopkins HIV Guide. ; 2015. [cited 2019 July 22]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545150/all/Nocardiosis.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Nocardiosis ID - 545150 A1 - Melia,Michael,M.D. AU - Auwaerter,Paul,M.D. Y1 - 2015/11/29/ BT - Johns Hopkins HIV Guide UR - https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545150/all/Nocardiosis DB - Johns Hopkins Guide DP - Unbound Medicine ER -