Mycobacterium fortuitum
MICROBIOLOGY
- Rapidly-growing, nonchromogenic, non-tubercular mycobacterium (NTM).
- May stain Gram positive [Fig] and resemble Nocardia spp.
- Upon AFB staining, rod form are usually 1-3 µm x 0.2-0.4 µm, and occasionally beaded, causing confusion with Nocardia.
- Typically takes 3-7 days for clinical cultures to become positive, but may require longer incubation.
- Löwenstein-Jensen media has been classically used to culture the organism.
- Reservoirs: soil, water, animals, marine life--worldwide distribution.
- Can be found as part of a biofilm environment.
- M. fortuitum group includes M. peregrinum, M. houstonese, M. boenickei, M. mageritense, M. senegalense and Mycobacterium setense sp. nov. Differentiation only by molecular testing.
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Last updated: May 1, 2023
Citation
Auwaerter, Paul. "Mycobacterium Fortuitum." Johns Hopkins ABX Guide, The Johns Hopkins University, 2023. Pediatrics Central, peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540365/3.3/Mycobacterium_fortuitum.
Auwaerter P. Mycobacterium fortuitum. Johns Hopkins ABX Guide. The Johns Hopkins University; 2023. https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540365/3.3/Mycobacterium_fortuitum. Accessed December 12, 2024.
Auwaerter, P. (2023). Mycobacterium fortuitum. In Johns Hopkins ABX Guide. The Johns Hopkins University. https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540365/3.3/Mycobacterium_fortuitum
Auwaerter P. Mycobacterium Fortuitum [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2023. [cited 2024 December 12]. Available from: https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540365/3.3/Mycobacterium_fortuitum.
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