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Otitis in a cat associated with Corynebacterium provencense
Sonja Kittl1, Isabelle Brodard1, Lorenz Rychener1
1Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Laenggassstrasse 122, CH-3001, Bern, Switzerland.
BMC Veterinary Research
|June 27, 2018
Summary
This study identifies Corynebacterium provencense as a cause of feline otitis, highlighting the need for species-level identification and antimicrobial susceptibility testing in veterinary diagnostics.
Area of Science:
- Veterinary Microbiology
- Infectious Diseases
- Genomics
Background:
- Corynebacteria are increasingly recognized as otitis pathogens in human and veterinary medicine.
- Detailed investigation into their role in canine and feline otitis is lacking.
Observation:
- A seven-month-old cat presented with vestibular signs and otitis media/interna.
- Bacteriology revealed a pure culture of an unidentified corynebacterium species.
Findings:
- The isolate was identified as Corynebacterium provencense using 16S rRNA gene sequencing and whole genome sequencing.
- The strain exhibited resistance to clindamycin, penicillin, and ciprofloxacin.
- Presumptive virulence factors, including iron acquisition genes, were identified.
Implications:
- Routine veterinary diagnostics may underreport Corynebacterium due to lack of species-level identification.
- Antimicrobial resistance in corynebacteria necessitates susceptibility testing for effective treatment.
- This case underscores the importance of comprehensive diagnostics for otitis management in felines.
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