Staphylococcus aureus is a type of bacteria (germ) often found on the skin and in the nose of healthy people.
Usually, this germ is harmless. Sometimes, the germ may cause skin infections such as boils and abscesses and can infect wounds; these infections are normally mild and easily treated.
Some strains of the Staphylococcus aureus germ have developed resistance to the more commonly used antibiotics – such as penicillin - and are referred to as MRSA or BORSA.
It is this resistance to certain (not all) antibiotics that make MRSA/BORSA different and it may not be so easy to treat if it does cause an infection.