European Journal of Molecular & Clinical Medicine

Abstract

Staphylococcus aureus is significant human pathogen which cause various kinds of infection ranging from minor skin diseases to life- threating endocarditis. It has acquired resistance to previously effective antimicrobials including the methicillin. Methicillin resistant Staphylococcus aureus (MRSA) is prototype of bacteria which is resistant and associated with long hospital stay, more mortality, raised costs & trouble-some to patient when compared with methicillin -sensitive Staphylococcus aureus (MSSA). The present study was prospective study conducted for a period 1 year 8 month (from Nov 2011-June 2013) all staphylococcal isolate in Microbiology Laboratory, Shri-Aurobindo Medical-college & P.G. institute Indore India. Gram staining of each specimen (except blood) was performed & findings noted. Each specimen was cultured on Blood agar & MacConkey’s agar aerobically incubated over-night at 37 ˚C. Staphylococcal isolate were identified by phenotyping methods like Gram stain, catalase test, slide &tube coagulase test growth on manitol-salt agar, VP test Phosphates test and bacitracin susceptibility test. The antimicrobial susceptibility testing was conducted by Kirby-Bauer disc diffusion method as per guidelines of CLSI. Sensitivity, specificity & Positive predictive valve of chromogenic-agar for identification of MRSA detection was 83.7%, 80.2% and 71.9% respectively. In our study out of 100 cefoxitin resistant strain 89 were mec a positive and 11 were mec a negative