Vancomycin-intermediate/resistant staphylococcus aureus
Staphylococcus aureus (S. aureus) is a bacterium commonly found on the skin and in the nose of about 30 percent of people. Vancomycin is an antibiotic sometimes used to treat serious infections caused by S. aureus. When S. aureus develops decreasing sensitivity to vancomycin, it's called vancomycin-intermediate staphylococcus aureus (VISA) or vancomycin-resistant staphylococcus aureus (VRSA).
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