Which drug is sensitive to staphylococcus aureus?

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Which drug is sensitive to staphylococcus aureus?

The overall percentages of S. aureus sensitive to the tested antibiotics were as follows: methicillin 85%, penicillin 8%, gentamicin 89%, ciprofloxacin 85%, erythromycin 80%, fusidic acid 96%, mupirocin 98%.

Does MRSA ferment mannitol?

Methicillin-resistant Staphylococcus aureus (MRSA) remains an important cause of nosocomial infections worldwide, with severe consequences for patients and significant healthcare costs. aureus strains that do not ferment mannitol on MSA, which is an important screening method for the detection of MRSA colonization.

How to identify methicillin resistant staphylococcus aureus?

Can all susceptibility tests detect MRSA? When used correctly, broth-based and agar-based tests usually can detect MRSA. The cefoxitin disk diffusion method can be used in addition to routine susceptibility test methods or as a back-up method.

What are the 5 characteristics of pathogenic S. aureus?

aureus expresses many potential virulence factors: (1) surface proteins that promote colonization of host tissues; (2) invasins that promote bacterial spread in tissues (leukocidin, kinases, hyaluronidase); (3) surface factors that inhibit phagocytic engulfment (capsule, Protein A); (4) biochemical properties that …

What is the best antibiotic for Staphylococcus aureus?

The treatment of choice for S. aureus infection is penicillin. In most countries, S. aureus strains have developed a resistance to penicillin due to production of an enzyme by the bacteria called penicillinase.

What bacteria can ferment mannitol?

Most pathogenic staphylococci, such as Staphylococcus aureus, will ferment mannitol. Most non-pathogenic staphylococci will not ferment mannitol. The Staphylococcus aureus ferments mannitol and turns the medium yellow. The Serratia marcescens does not grow because of the high salt content.

What does a positive mannitol test mean?

The inoculated tube is incubated at 35-37 C for 24 hours and the results are determined. A positive test consists of a color change from red to yellow, indicating a pH change to acidic.

What tests are used to identify Staphylococcus aureus?

Coagulase testing is the single most reliable method for identifying Staphylococcus aureus [9]. Coagulase production can be detected using either the slide coagulase test (SCT) or the tube coagulase test (TCT).

What disease can Staphylococcus aureus cause?

It is the leading cause of skin and soft tissue infections such as abscesses (boils), furuncles, and cellulitis. Although most staph infections are not serious, S. aureus can cause serious infections such as bloodstream infections, pneumonia, or bone and joint infections.

Why is S. aureus so virulent?

The bacteria have a fibrinogen/fibrin binding protein that helps them to attach to blood clots and traumatized tissue. This is the reason why S. aureus is capable of producing wound infections and post-surgery infections.

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