Identification and antibiotic susceptibility of bacterial isolates from dogs with otitis externa in Australia
Version of Record online: 11 DEC 2012
© 2012 The Author. Australian Veterinary Journal © 2012 Australian Veterinary Association
Australian Veterinary Journal
Volume 91, Issue 1-2, pages 43–46, January/February 2013
How to Cite
Bugden, D. (2013), Identification and antibiotic susceptibility of bacterial isolates from dogs with otitis externa in Australia. Australian Veterinary Journal, 91: 43–46. doi: 10.1111/avj.12007
- Issue online: 28 JAN 2013
- Version of Record online: 11 DEC 2012
- Manuscript Accepted: 23 JUL 2012
- MSD Animal Health
- otitis externa;
To identify and quantify the five most frequently isolated significant bacterial microorganisms, and their antibiotic susceptibility, from bacterial cultures of samples taken from the ears of dogs with otitis externa.
Bacterial culture and susceptibility testing data for ear swabs from dogs with presumed otitis externa were collated and evaluated.
The five most frequently isolated microorganisms were: Pseudomonas aeruginosa, Staphylococcus pseudintermedius, Proteus sp., beta-haemolytic streptococci and Escherichia coli. Susceptibility to gentamicin was very high for most isolates, whereas for polymyxin B, high levels of resistance were seen. Beta-haemolytic streptococci had high levels of resistance to all of the antibiotics tested.
This study provides veterinarians with Australian data to assist in cytological interpretation and initial empirical therapy of canine otitis externa.