Bovine subclinical mantis-associated methicillin-resistant Staphylococcus aureus, selective genotyping and antimicrobial susceptibility profile of the isolates in Kurdistan province of Iran

Background and Objectives: Staphylococcus aureus is frequently involved in bovine subclinical mastitis worldwide. Besides, the methicillin-resislant S. aureus (MRSA) carrier slate of animals is a matter of worrisome. This Study aimed to evaluate the frequency of MRSA, discriminatory geno-analysis and antibiotic resistance scheme of the grains isolated from bovine subclinical mastitis in Kurdistan province of Iran. Materials and Methods: A total of 283 samples were collected and analyzed for S. aureus phenotypically and molecularly. SCCmec and coa types, andpv/ gene were evaluated using polymerase chain reaction (PCR). Finally, the restriction fragment length polymorphism (RFLP) patterns of coa types and the antimicrobial susceptibility profile of the isolates were assessed. Results: Among the 95 isolates of S. aureus, 11 (11.57%) grains were recognized as MRSA. Six, one, and four SCCmec types represented for IVa, IVc, and V were determined, respectively, aniong which an individual IVa and V determinant harboured pvl gene. Regtriction digegtion products of 490 bp, 680 bp, and 730 bp of coa hands were generated. Tobramycin, mupirocin, fusidic acid, clindamycin, and chloramphenicol were the most effective drugs againsl the MRSA isolates. Conclusion: The detrimental involvement of S. aureus in bovine subclinical mastitis is proved herein. Besides, the contribution of MRSA and potential contamination of milk and dairy products with the bacterium may impose a serious public health risk. This demands serious and long-laging efforts to control the infection. The results may be effective in the implementation of accurate controlling strategies.