<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The study aimed to investigate the <italic>Staphylococcus</italic> species from dogs with chronic otitis externa in Istanbul and to determine their antibiotic susceptibility patterns. Ear swab samples were collected from 100 dogs suspected of otitis externa admitted at the clinics of Istanbul University - Cerrahpaşa, Faculty of Veterinary Medicine. The dogs were of different age, gender, and breed. The bacterial isolation was performed by conventional methods. BD Phoenix Automated Microbiology System was used to confirm bacterial identification by conventional methods and to test antimicrobial susceptibility. <italic>Staphylococcus</italic> spp. were isolated from 36% of the samples collected from the dogs. <italic>S. pseudintermedius, S. aureus, S. epidermidis, S. hyicus</italic> and <italic>S. chromogenes</italic> were identified in 41.6%, 22.2%, 11.1%, 5.5%, and 5.5%. In <italic>Staphylococcus</italic> spp. isolates, enrofloxacin, penicillin, and ampicillin-sulbactam resistance was 8.3%, marbofloxacin resistance was 11.1%, doxycycline resistance was 16.6%, amoxicillin-clavulanic acid, erythromycin, and gentamicin resistance was 19.4%, tetracycline, clindamycin, and sulphonamide resistance was 25%. Methicillin resistance was not observed in any of the isolates. However, multiple drug resistance (MDR) was detected in 11 (30.5%) of 36 isolates. In conclusion, the early detection and antimicrobial sensitivity testing of <italic>Staphylococcus</italic> spp in dog otitis externa cases that do not respond to empiric therapy could be beneficial for appropriate antibiotic selection and treatment thus preventing MDR.</p>
</abstract>

The study aimed to investigate the Staphylococcus species from dogs with chronic otitis externa in Istanbul and to determine their antibiotic susceptibility patterns. Ear swab samples were collected from 100 dogs suspected of otitis externa admitted at the clinics of Istanbul University - Cerrahpaşa, Faculty of Veterinary Medicine. The dogs were of different age, gender, and breed. The bacterial isolation was performed by conventional methods. BD Phoenix Automated Microbiology System was used to confirm bacterial identification by conventional methods and to test antimicrobial susceptibility. Staphylococcus spp. were isolated from 36% of the samples collected from the dogs. S. pseudintermedius, S. aureus, S. epidermidis, S. hyicus and S. chromogenes were identified in 41.6%, 22.2%, 11.1%, 5.5%, and 5.5%. In Staphylococcus spp. isolates, enrofloxacin, penicillin, and ampicillin-sulbactam resistance was 8.3%, marbofloxacin resistance was 11.1%, doxycycline resistance was 16.6%, amoxicillin-clavulanic acid, erythromycin, and gentamicin resistance was 19.4%, tetracycline, clindamycin, and sulphonamide resistance was 25%. Methicillin resistance was not observed in any of the isolates. However, multiple drug resistance (MDR) was detected in 11 (30.5%) of 36 isolates. In conclusion, the early detection and antimicrobial sensitivity testing of Staphylococcus spp in dog otitis externa cases that do not respond to empiric therapy could be beneficial for appropriate antibiotic selection and treatment thus preventing MDR.

Otitis Externa in Dogs: Distribution and Antimicrobial Susceptibility Patterns of <italic>Staphylococcus</italic> Spp. Isolates

Department of Microbiology, Institute of Graduate Studies

Department of Microbiology, Faculty of Veterinary Medicine

Macedonian Veterinary Review

This work is licensed under the Creative Commons Attribution 4.0 International License.

Otitis Externa in Dogs: Distribution and Antimicrobial Susceptibility Patterns of  Spp. Isolates

The study aimed to investigate the Staphylococcus species from dogs with chronic otitis externa in Istanbul and to determine their antibiotic susceptibility...

Otitis Externa in Dogs: Distribution and Antimicrobial Susceptibility Patterns of Staphylococcus Spp. Isolates

Published Online: Feb 07, 2023

Page range: 43 - 50

Received: May 16, 2021

Accepted: Jan 09, 2023

DOI: https://doi.org/10.2478/macvetrev-2023-0012

Keywords
antimicrobial resistance, canine, otitis externa

© 2023 Mohammad Hassan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Otitis Externa in Dogs: Distribution and Antimicrobial Susceptibility Patterns of Staphylococcus Spp. Isolates

Published Online: Feb 07, 2023

Page range: 43 - 50

Received: May 16, 2021

Accepted: Jan 09, 2023

DOI: https://doi.org/10.2478/macvetrev-2023-0012

Keywordsantimicrobial resistance, canine, otitis externa

© 2023 Mohammad Hassan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
antimicrobial resistance, canine, otitis externa