Fahimeh Nourbakhsh
Samaneh Borooni
Elaheh Tajbakhsh

Background: Staphylococcus aureus is a significant pathogen and major cause of nosocomial and community-acquired infections. The current study aimed at investigating the frequency of Panton-Valentine leukocidin (PVL) gene as a serious virulence factor causing WBC destruction. Methods: Collectively, ۱۰۰ species of S. aureus were isolated from Isfahan, Iran, hospitals and confirmed by biochemical tests (coagulase, mannitol fermentation, and DNase). The antibiotic resistance patterns were studied by the disk diffusion method. Results: Out of the ۱۰۰ isolates, ۵۶.۲% were PVL positive of which ۱۹.۸% from abscess, ۵۱.۷% from wound, ۲۳.۲% from bedsore, and ۵.۳% from tracheal secretion. Among the detected isolates, ۸۷.۸% were resistant to methicillin. Conclusions: The current study showed the high frequency of PVL in wound strains. Further studies are required to understand the distribution of these virulent isolates in order to decrease the risk of infection. High quality hospital cares as well as new antibiotics is required to combat the multidrug resistant bacteria.