A genus of nonmotile, nonsporeforming, aerobic, facultatively anaerobic bacteria (family Brucellaceae) containing Gram-negative rods interspersed with coccal elements. The metabolism of these bacteria is fermentative. They are pathogenic to animals. The type species is Actinobacillus lignieresii.
Origin
[actino- + L. bacillus, a little rod]
Actinobacillus actinomycetemcomitans
Actinobacillus equuli
Actinobacillus lignieresii