Listeria monocytogenes

**Definition:** A species of gram-positive, rod-shaped bacteria widely distributed in nature. It has been isolated from sewage, soil, silage, and from feces of healthy animals and man. Infection with this bacterium leads to encephalitis, meningitis, endocarditis, and abortion.

**Tree numbers:** - B03.353.500.500.500 - B03.510.100.500.500 - B03.510.460.400.410.485.500