Aggregatibacter actinomycetemcomitans

**Definition:** A species of Gram-negative, facultatively anaerobic spherical or rod-shaped bacteria indigenous to dental surfaces. It is associated with PERIODONTITIS; BACTERIAL ENDOCARDITIS; and ACTINOMYCOSIS.

**Tree numbers:** - B03.440.450.600.224.500 - B03.660.250.550.170.500

**Synonyms:** - Bacterium acetinomycetum comitans - Bacterium comitans - Actinobacillus actinomycetemcomitans - Haemophilus actinomycetemcomitans - Haemophilus actinomyceticomitans