Aggregatibacter spp

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Aggregatibacter spp on agar culture plate

Aggregatibacter spp are a commensal Gram-negative capnophilic bacteria found in the periodontal space of the dog.

These bacteria are commonly associated with canine periodontitis.

Species which have been reported in dogs include:

  • Aggregatibacter actinomycetemcomitans[1]

Diagnosis can be confirmed on agar culture but PCR assays or oral or fecal swabs are usually definitive in establishing a diagnosis[2].

This bacteria is reportedly sensitive to pradofloxacin and clindamycin[3].


  1. Yamasaki Y et al (2012) Distribution of periodontopathic bacterial species in dogs and their owners. Arch Oral Biol 57(9):1183-1188
  2. Kato Y et al (2011) Molecular detection of human periodontal pathogens in oral swab specimens from dogs in Japan. J Vet Dent 28(2):84-89
  3. de Oliveira RR et al (2011) The effect of a single episode of antimicrobial photodynamic therapy in the treatment of experimental periodontitis. Microbiological profile and cytokine pattern in the dog mandible. Lasers Med Sci 26(3):359-367