Presence and antimicrobial resistance of coagulase-negative staphylococci isolated from animals ina Veterinary Teaching Hospital inCyprus H., Esendal O. (2020): Presence and antimicrobial resistance of coagulase-negative staphylococci isolated from animals in a Veterinary Teaching Hospital in Cyprus. Veterinarni Medicina, 65: 191-198.
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Coagulase-negative staphylococci (CoNS) are a group of commensal microorganisms residing on the skin and mucous membranes of both humans and animals. Until recently, they have been regarded as non-pathogenic to livestock and companion animals, but since then, their clinical importance in veterinary medicine has increased with the discovery of their potential pathogenic roles in animals causing skin and soft tissue infections together with spontaneous abortions and mastitis. Scientific data concerning the presence of CoNS in North Cyprus are very limited. Therefore, the purpose of the study reported herein was to investigate the presence and antimicrobial resistance patterns of CoNS species isolated from various animals presented at the Veterinary Teaching Hospital in North Cyprus between July 2018 and 2019. Staphylococci were isolated from 37.0% (87/235) of the samples submitted, within which 60.9% (53/87) and 39.1% (34/87) were identified as coagulase-positive staphylococci (CoPS) and coagulase-negative staphylococci (CoNS), respectively. Among the CoNS, S. chromogenes was the most predominantly isolated species (14/34, 41.2%), followed byS. capitis (5/34, 14.7%) and S. simulans (4/34, 11.8%). Of these 34 CoNS, 24 (70.6%) and 10 (29.4%) were identified as MRCoNS and MSCoNS, respectively. The CoNS isolates showed relatively high levels of resistance towards amoxicillin/clavulanic acid (19/34, 55.9%), tetracycline (14/34, 41.2%) and penicillin (13/34, 38.2%). In conclusion, the presence of CoNS, especially MRCoNS, and the detection of multiple drug resistant (MDR) species with a high prevalence were regarded as being important since they might limit and have negative effects on the therapeutic treatment options of staphylococcal infections in animals, and might have both public and veterinary concerns.

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