Antibiotic susceptibility testing of MRSA isolates were investigated by disk diffusion test on MHA medium according to the CLSI instructions [12] . The following antibiotic disks (Mast, UK) were used: azithromycin (15 µg), norfloxacin (10 µg), erythromycin (15 µg), rifampin (5 µg), chloramphenicol (30 µg), tetracycline (30 µg), and clindamycin (2 µg).
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