Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium peregrinum (ex Bojalil et al. 1962) Kusunoki and Ezaki 1992.
Note: initially it was considered synonymous with Mycobacterium fortuitum.
Member of the Mycobacterium fortuitum complex.
Acid-fast rods,1.5-4 x 0.5 μm.
Colonies on egg medium appear in 7 days and are intermediate between smooth and
rough, and white to slightly yellowish in color but non-photochromogenic.
Temperature range for growth is 28-37 ºC. Grows in media supplemented with 5%
NaCl. Growth on MacConkey agar occurs at 28 ºC, but not at 37 ºC.
Isolated from bronchial aspirations from a child. Also isolated from skin and gills of fish (Ictalurus nebulosus & Carassius carassius).
Resistant to hydroxylamine (500 µg/ml) and doxycycline (16 mg/ml). Susceptible to amikacin (32 mg/ml).
Rarely a cause of pulmonary disease.
- John G. Magee and Alan C. Ward 2012. Family III. Mycobacteriaceae Chester 1897, 63AL in Bergey’s Manual of Systematic
Bacteriology, Volume Five The Actinobacteria, Part A, Michael Goodfellow & al. (editors), 312-375.
- Kusunoki S, Ezaki T. Proposal of Mycobacterium peregrinum sp. nov., nom. rev., and elevation of Mycobacterium chelonae subsp.
abscessus (Kubica et al.) to species status: Mycobacterium abscessus comb. nov. Int J Syst Bacteriol 1992; 42:240-245.
- Bhalla, G. S., Sarao, M. S., Kalra, D., Bandyopadhyay, K., & John, A. R. (2018). Methods of phenotypic identification of non-
tuberculous mycobacteria. Practical Laboratory Medicine, 12, e00107.
- Stephen Berger 2019. GIDEON Guide to Medically Important Bacteria, eBook.
- Mrlik V, Slany M, Kubecka J, Seda J, Necas A, Babak V, Slana I, Kriz P, Pavlik I. 2012. A low prevalence of mycobacteria in
freshwater fish from water reservoirs, ponds and farms. J. Fish Dis. 35:497–504. doi:10.1111/j.1365-2761.2012.01369.x
- Lamy B, Marchandin H, Hamitouche K, Laurent F. Mycobacterium setense sp. nov., a Mycobacterium fortuitum-group organism
isolated from a patient with soft tissue infection and osteitis. Int J Syst Evol Microbiol 2008; 58:486-490.
Positive results for arylsulfatase (3, 7 and 14 days), acid phosphatase, catalase inactivated at 68 ºC, iron uptake, nitrate reduction,
pyrazinamidase, tellurite reduction, and urea hydrolysis.
Can utilize as sole carbon source: fructose, glucose, succinate, pyruvate, propionate, mannitol and trehalose.
Negative results for niacin accumulation.
No utilization of benzoate, citrate, oxalate, xylose and sorbitol.
Variable results for Tween hydrolysis.
(c) Costin Stoica