Peer-reviewed veterinary case report
Identification and antimicrobial susceptibility of bacteria and yeasts isolated from healthy dogs and dogs with otitis externa.
- Journal:
- Journal of veterinary medicine. A, Physiology, pathology, clinical medicine
- Year:
- 2007
- Authors:
- Lyskova, P et al.
- Affiliation:
- Department of Biology and Biochemistry
- Species:
- dog
Plain-English summary
Researchers looked at the types of bacteria and yeast found in the ears of healthy dogs and those with otitis externa, which is an ear infection. They found that the most common bacteria in dogs with ear infections was Staphylococcus intermedius, followed by several others, including a type of yeast called Malassezia pachydermatis. The study showed that these microorganisms are more common in dogs with ear infections compared to healthy dogs. Most of the bacteria were very sensitive to a treatment called gentamicin, and the yeast was also highly responsive to all antifungal medications tested. This suggests that effective treatments are available for managing ear infections in dogs.
Abstract
The bacterial and fungal flora of the external ear canal of dogs with otitis externa and of healthy dogs were studied. The most frequently isolated microorganism from otitic ears was Staphylococcus intermedius (58.8%), followed by Malassezia pachydermatis (30.9%), Streptococcus canis (29.9%), Proteus spp. (14.4%) and Escherichia coli (10.3%). A statistical analysis of our results showed that the prevalence of these microorganisms is significant in dogs with otitis externa. Furthermore, the antimicrobial susceptibility patterns of isolated strains were determined. Majority of all bacterial isolates were most susceptible to gentamicin. Malassezia pachydermatis, the most prevalent yeast in this study, showed an excellent level of susceptibility to all antifungal agents tested.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/18045339/