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Defining and Diagnosing Infectious Bovine Keratoconjunctivitis.

Mac Kneipp1

  • 1Sydney School of Veterinary Science, The University of Sydney, Camden, NSW, Australia.

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|May 29, 2021
PubMed
Summary

The term "pinkeye" is imprecise for diverse bovine eye diseases. This study proposes a new definition for infectious bovine keratoconjunctivitis (IBK) and introduces "ocular moraxellosis" for IBK caused by Moraxella species.

Keywords:
Case definitionCattleDiagnosisInfectious bovine keratoconjunctivitisMoraxellosisPinkeye

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Area of Science:

  • Veterinary Ophthalmology
  • Bovine Infectious Diseases
  • Bacteriology

Background:

  • Pinkeye and infectious bovine keratoconjunctivitis (IBK) are commonly used terms for bovine eye conditions.
  • The epidemiology and causative agents of IBK are not fully understood, leading to diagnostic challenges.
  • Current terminology lacks precision, encompassing non-infectious conditions and IBK cases not involving Moraxella bovis.

Purpose of the Study:

  • To address the imprecision of the term "pinkeye" in veterinary diagnostics.
  • To propose a standardized case definition for infectious bovine keratoconjunctivitis (IBK) as a herd-level disease.
  • To introduce a new, specific term, "ocular moraxellosis," for IBK cases confirmed to be caused by Moraxella species.

Main Methods:

  • Literature review and analysis of existing diagnostic criteria for bovine ocular diseases.
  • Development of a proposed case definition for IBK based on epidemiological and etiological considerations.
  • Definition of "ocular moraxellosis" based on the confirmed presence of Moraxella species.

Main Results:

  • The term "pinkeye" is deemed too broad and should be abandoned in favor of more precise terminology.
  • A case definition for IBK is proposed, emphasizing its nature as a herd disease.
  • The term "ocular moraxellosis" is defined for IBK cases where Moraxella spp. are identified.

Conclusions:

  • Standardizing terminology is crucial for accurate diagnosis and management of bovine eye diseases.
  • A clear case definition for IBK will improve epidemiological studies and control strategies.
  • The introduction of "ocular moraxellosis" allows for specific identification of bacterial-induced IBK, aiding targeted treatment and research.