chapter  4
14 Pages

Community-Associated MRSA as a Pathogen /

ByKaren J. Brasel, John A. Weigelt

Community-associated methicillin-resistant Staphylococcus aureus (CA-

MRSA) was initially defined as an infection with methicillin-resistant

S. aureus (MRSA) in an outpatient or in a patient that manifested infection

within 48 hours of hospital admission (1). It was soon recognized that CA-

MRSA has unique characteristics not related to time of onset or hospital-

ization that differentiate it from health care-associated MRSA (HA-MRSA).

These include epidemiology, presentation, treatment, and genetic profile.