Rhodoccocus hoagii
Rhodoccocus hoagii is a topic covered in the Johns Hopkins ABX Guide.
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MICROBIOLOGY
- This pleomorphic, non-motile Gram-positive coccobacillus [Fig 1] has undergone several name changes.
- Formerly known as Corynebacterium equi, then Rhodococcus equi, and later on Rhodoccushoagii (due to the realization R. equi had an earlier heterotypic synonym in Corynebacterium hoagii).
- Ubiquitous in the environment.
- Variably acid-fast staining.
- Organism varies from coccoid to bacillary form depending on growth condition.
- Modes of acquisition: inhalation, local inoculation, or ingestion.
- A common cause of bronchopneumonia in foals, also swine and cattle.
- It can be overlooked as contaminant diphtheroids and be discarded.
- The lab should be aware if clinically suspected.
- It can also be confused with Micrococcus, Bacillus or Mycobacteria species.
-- To view the remaining sections of this topic, please log in or purchase a subscription --
MICROBIOLOGY
- This pleomorphic, non-motile Gram-positive coccobacillus [Fig 1] has undergone several name changes.
- Formerly known as Corynebacterium equi, then Rhodococcus equi, and later on Rhodoccushoagii (due to the realization R. equi had an earlier heterotypic synonym in Corynebacterium hoagii).
- Ubiquitous in the environment.
- Variably acid-fast staining.
- Organism varies from coccoid to bacillary form depending on growth condition.
- Modes of acquisition: inhalation, local inoculation, or ingestion.
- A common cause of bronchopneumonia in foals, also swine and cattle.
- It can be overlooked as contaminant diphtheroids and be discarded.
- The lab should be aware if clinically suspected.
- It can also be confused with Micrococcus, Bacillus or Mycobacteria species.
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Last updated: August 8, 2022
Citation
Fabre, Valeria. "Rhodoccocus Hoagii." Johns Hopkins ABX Guide, The Johns Hopkins University, 2022. Johns Hopkins Guides, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540477/2/Rhodoccocus_hoagii.
Fabre V. Rhodoccocus hoagii. Johns Hopkins ABX Guide. The Johns Hopkins University; 2022. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540477/2/Rhodoccocus_hoagii. Accessed February 7, 2023.
Fabre, V. (2022). Rhodoccocus hoagii. In Johns Hopkins ABX Guide. The Johns Hopkins University. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540477/2/Rhodoccocus_hoagii
Fabre V. Rhodoccocus Hoagii [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2022. [cited 2023 February 07]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540477/2/Rhodoccocus_hoagii.
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