tailieunhanh - Staphylococcus aureus – A versatile pathogen biochemical characterization and antibiogram

S. aureus is a major human pathogen capable of causing a wide range of infections and remains the second cause of nosocomial infections. To biochemically characterise the isolated coagulase-positive staphylococci, to determine its antimicrobial susceptibility and the MRSA status. 2220 samples were processed in the study period among which 150 were S. aureus, identified by Gram staining and coagulase test. Tests for characterisation included mannitol fermentation, demonstration of pigment production on milk agar, phosphatase test, DNase test, tellurite reduction test and urease production. Anti-microbial susceptibility was done using the commonly used antibiotics and MRSA (Methicillinresistant Staphylococcus aureus) status was determined by cefoxitin disc diffusion method. Of the 150 tube coagulase positive S. aureus, only 145 () were haemolytic, which were slide coagulase positive too in the first minute. The remaining 5 were slide coagulase positive after 1 minute. | Staphylococcus aureus A versatile pathogen biochemical characterization and antibiogram

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