Staphylococcus aureus, often called “staph”, is a common type of bacteria that can be found in the nose and on the skin of about one out of every three people. Methicillin-resistant Staphylococcus aureus, also called MRSA, are staph that are not killed by many of the antibiotics doctors used to prescribe most commonly for staph infections.
Until the mid-1990s, MRSA mainly affected patients in hospitals and other healthcare settings. Since that time, a new strain of MRSA has emerged. This new strain is called community-associated MRSA, and has rapidly become one of the most common causes of skin and soft tissue infections among otherwise healthy people in the community.