Pasteurella

**Definition:** The oldest recognized genus of the family PASTEURELLACEAE. It consists of several species. Its organisms occur most frequently as coccobacillus or rod-shaped and are gram-negative, nonmotile, facultative anaerobes. Species of this genus are found in both animals and humans.

**Tree numbers:** - B03.440.450.600.600 - B03.660.250.550.590