Listeria monocytogenes is a Gram-positive, rod-shaped, facultative anaerobic and motile bacterium. It is able to form biofilm.
Listeria monocytogenes causes listeriosis, a principally foodborne infectious disease. Immunocompromised patients, pregnant women, and newborns are at risk of a severe course. Disease patterns include:
Endocarditis (inflammation of the inner lining of the heart)
Encephalitis (inflammation of the brain)
Meningitis (inflammation of the meninges)
Listeria monocytogenes is ubiquitous in the environment, particularly in the soil, on plants, and in wastewater. Listeria is also often found in spoiled silage.
Relevance of pathogen in transmission in endoscopy
Pulmonology: Not relevant
Ear, nose, and throat: Not relevant
Urology: Not relevant
Relevance for endoscope surveillance
Low or moderate concern organism
Listeria monocytogenes is mainly transmitted orally through contaminated drinking water and food. Triggers are often poultry, meat, fish, and raw milk products, less frequently pre-made salads. Infection is also possible through very close contact with animals.
Listeria monocytogenes 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
Listeria monocytogenes shows reduced susceptibility to cephalosporins.
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