Equis ISSN 2398-2977

Enterobacter / Aerobacter spp

Contributor(s): Sarah Binns, Susan Dawson, Richard Walker

Introduction

Classification

Taxonomy

  • Family:Enterobacteriaceae.
  • Tribe:Klebsiellae.
  • Genus:Enterobacter;Aerobacter.
  • Some DNA hybridization groups ofEnterobacter agglomeranshave been assigned to the genusPantoea.

Etymology

  • Gk:entero- intestine;bacter- a small rod;aero- air.

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Clinical Effects

Epidemiology

Lifecycle

  • Reproduces by binary fission in anaerobic or aerobic environment.
  • Does not form spores.
  • May undergo conjugation with other Enterobacteria, with transfer of plasmids.

Transmission

  • Exogenous or endogenous infection.
  • Often following wound contamination.

Pathological effects

  • Trauma or surgery, eg arthrotomy   →   triggers endogenous (opportunistic) infection   →   pathogenicity.
    diseases:
  • Horse: uterine infections, possibly abortion   Abortion: overview  .
  • Cattle: coliform mastitis.
  • Pig: occasionally part of mastitis-metritis-agalactia (MMA) syndrome.

Other Host Effects

  • Usually commensal found in water, soil, sewage and gastrointestinal tract.

Control

Control via chemotherapies

Usual susceptibility

Vaccination

  • None.

Diagnosis

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Hong C B, Donahue J M, Giles R C et al (1993) Etiology and pathology of equine placentitis. J Vet Diagn Invest (1), 56-63 PubMed.
  • Burrows G E, Morton R J & Fales W H (1993) Microdilution antimicrobial susceptibilities of selected gram-negative veterinary bacterial isolates. J Vet Diagn Invest (4), 541-547 PubMed.
  • Gibson J A, Eaves L E & O'Sullivan B M (1982) Equine abortion associated with Enterobacter agglomerans. Equine Vet J 14 (2), 122-125 PubMed.

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