Otodectic and bacterial etiology of feline otitis externa in Tripoli, Libya

Abstract

Background: Feline otitis externa is a dermatological disorder with a multifactorial complex etiology.Aim: This study aimed to investigate the prevalence of different etiological agents, particularly the parasitic and bacterial, responsible for the cases of feline otitis externa in Tripoli, Libya, and to assess the antimicrobial susceptibility of the bacterial isolates from those cases.Methods: Cerumen and otic discharges of the suspected cats were collected for parasite detection and bacterial culture. Kirby–Bauer’s disk diffusion method was used for antimicrobial susceptibility testing.Results: The results showed that otodectic mites and bacterial causes were equally the most prevalent in those cases, with a prevalence of 47.1% each. Otodectes cynotis infestation was more frequently bilateral and severe. Staphylococcus spp. were the most prevalent among bacterial causes (75%), followed by Proteus spp. (16.6%) and Pseudomonas spp. (8.4%). Norfloxacin and gentamicin were the most effective antimicrobials against bacterial isolates, as they were effective against 83.3% and 70.8% of isolates, respectively.Conclusion: Otodectes cynotis infestation and staphylococcal infections constituted the most common etiology of feline otitis externa in Tripoli, Libya, and norfloxacin represented a cogent antibacterial for the treatment of otitis externa.

Occurrence of otoacariasis in cats

“…In the present study the bilateral (80.76%) ear infection was higher in otoacariasis infested cats than the unilateral (19.23%) ear infestation. These observations are similar to the findings of Hiblu et al (2020) [9] , Bollez et al (2018) [3] and Deji et al (2010) [6] . As Otodectes cynotis is very contagious and migrates easily from one to another part of host so the infestation would not be restricted to one ear canal while will affect both the ear canal and also cause ectopic infestation (Table 06).…”

“…(2011) [13] and Hiblu et al (2020) [9] . The higher intensity of severe infestation of otoacariasis in cats attributed to the delayed presentation of the cases and negligence of therapy (Table 05).…”

On Gram-Positive- and Gram-Negative-Bacteria-Associated Canine and Feline Skin Infections: A 4-Year Retrospective Study of the University Veterinary Microbiology Diagnostic Laboratory of Naples, Italy

“…Since staphylococci are part of the natural skin microbiota [32], they are commonly reported as the leading cause of otitis externa, pyoderma, and postoperative wound infections in companion animals [33,34]. Moreover, according to the literature, also in this 4-year study, staphylococci, in particular CoNS S. aureus (21%), and S. pseudintermedius (11%), were found to be the main causative agents of feline skin infections [28,[35][36][37].…”

Infestasi Ektoparasit Pada Kucing Liar Di Kampus Ipb Gunung Gede

“…Otodectes cynotis adalah tungau yang hidup di dalam saluran eksterna telinga (Hiblu et al 2020) dan disebut dengan ear mite. Tungau ini banyak menginfeksi kucing, anjing, dan karnivora liar (Bastos et al 2020).…”

“…Gejala klinis yang ditimbulkan akibat infestasi tungau ini pada kucing yaitu hewan sering mengaruk pada daerah telinga dan kotoran telinga berwarna hitam gelap. Infestasi Otodectes cynotis dapat menyebabkan otitis eksterna (Hiblu et al 2020).…”