background: methicillin resistant staphylococcus aureus (mrsa) has been emerged as a nosocomial and community acquired pathogen worldwide. there are many challenges for laboratory detection of mrsa. the aim of this study was to compare different phenotypic methods with pcr based method as a gold standard for detection of meca gene. methods: a total of 220 clinical isolates of s. aureus which we...

Lack of correlation between quantitative minimal inhibitory concentration (MIC) determinations and disk diffusion susceptibility tests in our laboratory prompted a study to reevaluate the use of the disk diffusion test for sulfonamide susceptibility testing of Neisseria meningitidis. One hundred and sixty-three recent clinical isolates of N. meningitidis were examined for sulfonamide susceptibi...

Interpretive disk diffusion breakpoints for caspofungin are proposed by evaluating 762 isolates of Candida spp., representing 10 different species obtained as part of the caspofungin clinical trials. Standardized broth microdilution reference tests were compared to the zone diameters observed with 5-microg caspofungin disks produced by two different disk manufacturers. Disk diffusion breakpoint...

results the mean of the inhibition zone diameter around the discs of green tea extract in all concentrations was significantly less than 1% sodium hypochlorite (p < 0.001). the antimicrobial effect increased in higher concentrations of extracts of green tea (p < 0.001). conclusions although the antimicrobial effect increases in higher concentrations of extracts of green tea, 1% sodium hypochlor...

background: urinary tract infection (uti) is one of the most prevalent infectious diseases and escherichia coli is its common cause. the aim of this study was to assess the resistance patterns of e.coli in urinary tract infections and to determine the susceptibility of e.coli to commonly used antimicrobials and also to evaluate the options for empirical treatment of uti. methods: this study was...

BACKGROUND Coagulase-negative staphylococci (CNS) are a common cause of nosocomial infections. In recent years, an increase in the incidence of methicillin-resistant coagulase-negative staphylococci (MRCNS) has led to the severity of the disease. OBJECTIVES The aim of this study was to isolate and identify MRCNS strains by oxacillin disk agar diffusion, oxacillin agar screening, and polymeras...

We compared results of disk diffusion antifungal susceptibility testing from Candida sp. strains passaged on CHROMagar and on potato dextrose agar. The overall categorical agreements for fluconazole and voriconazole disk testing were 95% and 98% with 0% and 0.5% very major errors, respectively. Disk diffusion testing by the CLSI (formerly NCCLS) M44-A method can be performed accurately by takin...