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Published on: May 1, 2021
Moraxella bovoculi and infectious bovine keratoconjunctivitis: cause or coincidence?
1Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA. jaangelos@ucdavis.edu
The Veterinary Clinics of North America. Food Animal Practice
|February 2, 2010
Summary
Moraxella bovoculi, a bacterium linked to infectious bovine keratoconjunctivitis (IBK), may play a role in pinkeye. Vaccines for IBK should consider including M. bovoculi antigens for prevention.
Area of Science:
- Veterinary Microbiology
- Bacterial Pathogenesis
Background:
- Moraxella bovoculi is a gram-negative coccus identified in 2002.
- Previously, it may have been misidentified as Moraxella ovis or Branhamella ovis.
Purpose of the Study:
- To investigate the potential role of Moraxella bovoculi in infectious bovine keratoconjunctivitis (IBK).
Main Methods:
- Isolation of Moraxella bovoculi from calves with and without IBK.
- Review of diagnostic laboratory records and anecdotal evidence.
Main Results:
- Moraxella bovoculi can be isolated from both healthy calves and those with IBK or conjunctivitis.
- Anecdotal evidence suggests autogenous M. bovoculi bacterins may prevent IBK.
Conclusions:
- The precise role of Moraxella bovoculi in IBK pathogenesis remains uncertain.
- Inclusion of M. bovoculi antigens in IBK vaccines is recommended for prevention.
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