Pseudomonas that Causes Otitis in Dogs: An Increasing Opposition

Abstract

Article HistoryThis study investigated the prevalence and antibiotic susceptibility of Pseudomonas aeruginosa isolated from canine otitis externa in Baghdad, Iraq. Twelve ear swabs were collected from symptomatic dogs between October 2021 and February 2022. Identification of P. aeruginosa isolates was confirmed by a combination of phenotypic (morphology, Gram stain, biochemical tests) and genotypic (Vitek2 and PCR) methods. All isolates exhibited complete resistance to Erythromycin, Trimethoprim, and Chloramphenicol, and high resistance to Nalidixic acid (91.6%). Conversely, susceptibility was observed against Imipenem and Penicillin G (100%), Polymyxin B and Ceftazidime (91.6%), Streptomycin (58.3%), and Ceftriaxone (58.3%). Additionally, all isolates demonstrated the ability to produce hemolysin and phospholipase C, indicating potential virulence properties. The aforementioned results underscore the frequency of multidrug-resistant P. aeruginosa in cases of canine otitis externa and stress the significance of testing for antibiotic susceptibility in order to make well-informed treatment decisions.