Methicillin resistance among coagulase-positive staphylococci isolated from dogs with otitis externa,skin wounds and pyoderma [Otitis eksterna,deri yarasi ve pyodermali köpeklerden izole edilen köagulaz pozitif stafilokoklarin metisilin dirençliliǧi]

In this study,s4 coagulase-positive staphylococci (33 staphylococcus aureus and 21 staphylococcus intermedius) isolated from 96 dogs with otitis externa,skin wounds and pyoderma were investigated for the methicillin (oxacillin) resistance. s. aureus was detected as the predominant coagulase-positive staphylococci in dogs affected by otitis externa and skin infections. among coagulase-positive staphylococci,four s. aureus and one s. intermedius isolates,which did not contain meca gene were found phenotypically resistant to methicillin,but were susceptible to amoxicillin/clavulanic acid by the disk diffusion test. five phenotypic methicillin-resistant coagulase-positive staphylococci were isolated from two (2.2%) dogs with otitis externa,two (15.4%) dogs with pyoderma and one (3.2%) dog with skin wound. the results of this study shows that methicillin-susceptible or -resistant s. aureus and s. intermedius are the predominate organisms in dogs with otitis externa and skin infections,and the rapid and correct diagnosis of methicillin-resistance is of great importance for the treatment of dogs.