Introduction: Staphylococcus aureus
causes a wide range of infections and as a multivalent pathogen is one of the causative agents of nosocomial and community infections. Therefore, the aim of this study was to identify and determine the pattern of antibiotic resistance of methicillin-resistant Staphylococcus aureus
(MRSA) isolates from patients in hospitals and medical centers in Marand city and also to evaluate the presence of mecA
Material and Methods: In this cross-sectional descriptive study, ۳۸۵ samples of S. aureus were collected from different clinical samples of patients in hospitals and medical centers of Marand city. S. aureus was identified using standard biochemical methods. Methicillin
resistance was determined by disk diffusion method in the presence of oxacillin and cefoxitin. The pattern of antibiotic resistance of the strains was determined by disk diffusion method and according to CLSI recommendation and also PCR method was used to evaluate the frequency of MecA gene.
Results: In the present study, out of ۳۸۵ samples of S. aureus, ۲۱۵ (۵۵.۸۴%) samples were methicillin resistant. PCR results for mecA
gene showed that ۱۱۰ samples had mecA
gene. The highest antibiotic resistance was observed against penicillin (۱۰۰%) and erythromycin (۸۳.۶۳%). Most MRSA
were isolated from urine and wound samples.
Conclusion: The results of this study indicate the prevalence of methicillin-resistant species and also the increase in antibiotic resistance of MRSA
to various antibiotics. Therefore, in order to prevent increased resistance to other antibiotics, it is recommended to avoid inappropriate use of antibiotics.