Antibiotic susceptibility pattern and the prevalence of Staphylococcus aureus isolated from skin and soft tissue in Tehran Razi skin hospital (2014-15)

Abstract

Background: Staphylococcus aureus (S. aureus) is the most common cause of skin and soft tissue infections. This study aimed to determine the prevalence of S. aureus isolated from skin and soft tissue and antibiotic susceptibility pattern among the patient hospitalized in Razi skin hospital (Tehran-Iran). Materials and Methods: This cross-sectional study was conducted on patients (n=400) with skin and soft tissue infections in Razi skin hospital. Sterilized swabs were used to collect the skin infection samples. S. aureus isolates were confirmed using biochemical tests (gram staining, catalase, coagulase, DNase test and manitol fermentation tests). Result: 51.3 %( 205 out of 400) of isolates were S. aureus. Ninety six (46.8%) of isolates were methicillin and penicillin-resistant S. aureus. All of the isolates showed sensitivity to vancomycin, linezolid. 98% of the isolates were susceptible to daptomycin. One-hundred sixteen (56.6%) isolates were multi- drug resistant. Conclusion: More than half of the skin and soft tissue infections were caused by S.aureus. More than 46 percent of the isolates were methicillin resistant. The highest resistance to penicillin was observed.

Keywords

• Staphylococcus aureus
• Skin and soft tissue infection (SSTI)
• Antibiotic susceptibility pattern
• MRSA