Type your tag names separated by a space and hit enter


Valeria Fabre, M.D., John G. Bartlett, M.D.
Actinomyces 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 --


  • Thin, branching (filamentous or beaded) Gram-positive bacillus [Fig 1].
    • Microaerophilic, grow best anaerobically.
    • VERY fastidious, often does not grow in culture.
  • Agents: A. israelii, A. naeslundii, A. odontolyticus, A. viscosus, A. meyer and Propionibacterium propionicum and A. gereneseriae.
    • Virtually all cases are mixed infections with other bacteria including Eikenella corrodens, Bacteroides spp, S. aureus, Streptococcus spp., Aggregatibacter actinomycetemcomitans, and/or Fusobacterium sp.
    • Normal flora of mouth, gut, genital tract.
  • Diagnosis is often made by histopathology -- not by culture, even when suspected.

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

Last updated: December 6, 2018


Fabre, Valeria, and John G Bartlett. "Actinomyces." Johns Hopkins ABX Guide, The Johns Hopkins University, 2018. Pediatrics Central, peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540005/7/Actinomyces.
Fabre V, Bartlett JG. Actinomyces. Johns Hopkins ABX Guide. The Johns Hopkins University; 2018. https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540005/7/Actinomyces. Accessed June 25, 2019.
Fabre, V., & Bartlett, J. G. (2018). Actinomyces. In Johns Hopkins ABX Guide. Available from https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540005/7/Actinomyces
Fabre V, Bartlett JG. Actinomyces [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2018. [cited 2019 June 25]. Available from: https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540005/7/Actinomyces.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Actinomyces ID - 540005 A1 - Fabre,Valeria,M.D. AU - Bartlett,John,M.D. Y1 - 2018/12/06/ BT - Johns Hopkins ABX Guide UR - https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540005/7/Actinomyces PB - The Johns Hopkins University DB - Pediatrics Central DP - Unbound Medicine ER -