Prevotella spp

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Prevotella spp on agar culture plate

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

These bacteria are commonly associated with canine periodontitis, but bite wounds from dogs can cause local and systemic infections in humans[1].

Species which have been reported in dogs include:

  • Prevotella intermedia[2]
  • Prevotella nigrescens[3]
  • Prevotella oralis
  • Prevotella bivia
  • Prevotella buccae
  • Prevotella loescheii[4]

Rare cases of systemic disease have been reported in dogs, presumably from gastrointestinal penetration by the anaerobe. Meningitis[5] and periorbital abscesses[6] have been reported in an isolated case.

Diagnosis can be confirmed on agar culture but PCR assays or oral or fecal swabs are usually definitive in establishing a diagnosis[7].

This bacteria is reportedly sensitive to pradofloxacin[8] and clindamycin.


  1. Philipsen TE et al (2006) Cat and dog bites. What to do? Guidelines for the treatment of cat and dog bites in humans. Acta Chir Belg 106(6):692-695
  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. Yamasaki Y et al (2012) Distribution of periodontopathic bacterial species in dogs and their owners. Arch Oral Biol 57(9):1183-1188
  4. Schindl A & Schön H (1999) Foot infection with Prevotella bivia, P. oralis and P. loescheii after wound licking. J Med Microbiol 48(1):109
  5. Allan R et al (2004) Meningitis in a dog caused by Prevotella oralis. J Small Anim Pract 45(8):421-423
  6. Homma K & Schoster JV (2000) Anaerobic orbital abscess/cellulitis in a Yorkshire Terrier dog. J Vet Med Sci 62(10):1105-1107
  7. Fogarty LR & Voytek MA (2005) Comparison of bacteroides-prevotella 16S rRNA genetic markers for fecal samples from different animal species. Appl Environ Microbiol 71(10):5999-6007
  8. Silley P et al (2012) Bactericidal properties of pradofloxacin against veterinary pathogens. Vet Microbiol 157(1-2):106-111