Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of hospital-acquired infections in most hospitals worldwide. The aim of this study is to investigate the antimicrobial susceptibility, Panton Valentine Leucocidine (PVL) mecA and toxin genes, agr types and staphylococcal cassette chromosome mac (SCCmec) types of MRSA bloodstream isolates collected from Salman University Hospital, Alkharj, KSA. Antimicrobial susceptibilities were investigated by agar diffusion method; PVL, mecA and toxin genes by polymerase chain reaction (PCR) and SCCmec and agr typing were performed by multiplex PCR. Totally MRSA isolates were susceptible to linezolid and glycopeptide vancomycine. mecA gene was detected in totally of the isolates, on the other hand, PVL positive isolate was not detected. sea was the most frequently (76%) detected enterotoxin gene. SCCmec typing revealed type III in 85% and agr typing revealed type I in 87% of the isolates.