Aggregatibacter aphrophilus

**Definition:** A species of Gram-negative, facultatively anaerobic spherical or rod-shaped bacteria indigenous to oral cavity and pharynx. It is associated with BACTERIAL ENDOCARDITIS; and MENINGITIS.

**Tree numbers:** - B03.440.450.600.224.750 - B03.660.250.550.170.750

**Synonyms:** - Haemophilus aphrophilus