Pasteurella pneumotropica

**Definition:** A species of gram-negative bacteria in the genus PASTEURELLA, found in the NASOPHARYNX of normal GUINEA PIGS; RATS; HAMSTERS; MICE; DOGS; and CATS. When associated with disease, it is usually a secondary invader. Occasional infections have been reported in humans.

**Tree numbers:** - B03.440.450.600.600.650 - B03.660.250.550.590.650