DAVID NICHOLLS / SCIENCE PHOTO LIBRARY DAVID NICHOLLS / SCIENCE PHOTO LIBRARY
MRSA. Computer artwork displaying the term MRSA against shapes representing bacteria and bacterial growth. MRSA stands for methicillin-resistant Staphylococcus aureus. MRSA is a gram-positive, round (coccus) bacterium. It is resistant to many commonly prescribed antibiotics. S. aureus is carried by around 30% of the population without causing any symptoms. However, in vulnerable people, such as those that have had surgery or those that have a weak immune system, it can cause wound infections, pneumonia and blood poisoning. The spread of MRSA can be prevented by health workers washing their hands between patients and before procedures.
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