Mycobacterium fortuitum is a Gram-positive, immobile rod-shaped bacterium. It is a non‐tuberculous species from the strain of actinobacteria.
Mycobacterium fortuitum mainly causes nosocomial infections. Possible disease patterns include:
Infections of the skin and soft tissues
Osteomyelitis (inflammation of the bone)
Infection of the artificial heart valve
Mycobacterium fortuitum is widespread worldwide. The pathogen occurs in tap water, sewage, rivers, and soils, and is able to form biofilms.
Relevance of pathogen in transmission in endoscopy
Gastroenterology: Not relevant
Ear, nose, and throat: Not relevant
Urology: Not relevant
Relevance for endoscope surveillance
Low or moderate concern organism
Mycobacterium fortuitum is transmitted via contaminated water or food, and in an airborne manner.
Mycobacterium fortuitum can also be spread and transmitted through water in healthcare facilities. The water used for final rinsing of endoscopes must therefore be microbiologically controlled.
Resistance to antibiotics
Mycobacterium fortuitum shows a high resistance to antibiotics.
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García-Coca M et al. Inhibition of Mycobacterium abscessus, M. chelonae, and M. fortuitum biofilms by Methylobacterium sp. J Antibiot (Tokyo). 2020 Jan;73(1):40–47.
Gnanenthiran SR et al. Prosthetic Valve Infective Endocarditis With Mycobacterium Fortuitum: Antibiotics Alone Can Be Curative, Heart Lung Circ. 2017 Nov;26(11):e86-e89.
Shen Y et al. In Vitro Susceptibility of Mycobacterium abscessus and Mycobacterium fortuitum Isolates to 30 Antibiotics, Biomed Res Int. 2018 Dec 30;2018:4902941.