MRSA (Methicillin-resistant Staphylococcus aureus) is an infection that is caused by a strain of staph bacteria that is resistant to the antibiotics typically used to combat staph infections. HA-MRSA or health care-associated MRSA affects people who are or have been in hospitals, nursing homes, dialysis centers, or other health care settings, especially those who have undergone surgery or invasive procedures. CA-MRSA or community-associated MRSA occurs in communities of healthy people, such as child care workers, high school wrestlers, or people living in crowded conditions. Community-associated MRSA usually starts as a painful skin boil or abscess that is often confused...
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