What are Vancomycin-Intermediate Staphylococcus aureus (VISA) and Vancomycin-Resistant Staphylococcus aureus (VRSA)?
Staphylococcus aureus is a bacterium commonly carried on the skin and within the nose of people. The bacterium can cause infections such as boils or pneumonia. Over time, the widespread use of antibiotics has led some S. aureus to become resistant to many antibiotics, which means the antibiotics no long work to kill the bacterium as they should. Some S. aureus have become resistant to the antibiotic vancomycin. If large doses of vancomycin might still be able to kill the S. aureus, it is called Vancomycin-intermediate S. aureus (VISA). If no amount of vancomycin will kill the S. aureus, it is called Vancomycin-resistant S.aureus (VRSA). What are the symptoms of VISA/VRSA? VISA or VRSA can cause skin infections, abscesses, pneumonia, and infection of the heart valves or bones. Who is likely to get VISA/VRSA? VISA/VRSA is extremely rare. To date only a few cases have been reported in the US. People with the following conditions are more likely to get VISA/VRSA: Underlying health conditio