Morphology: Gram-negative rod
Habitat: Found in the environment and in the intestinal tract of humans and animals
Disease or illness: Can cause urinary tract infections, pneumonia, and meningitis, especially in people who have a weakened immune system, or who already have another serious illness
Who is at risk: The elderly, persons who have a weakened immune system, or who already have another serious illness
Avoidance techniques: Wash hands well after using the toilet