MRSA stands for Meticillin (M) resistant (R) Staphylococcus (S) aureus (A).
Staphylococcus aureus is a common bacterium (germ) which can be found on the skin or in the nose of about a third of the population. Many normal healthy people have Staphylococcus aureus on their skin without causing them any harm. MRSA is a type of Staphylococcus aureus which is resistant to the more commonly used antibiotics.
