Methicillin-resistant Staphylococcus Aureus (MRSA) is a type of bacteria that is resistant to certain antibiotics. These antibiotics include methicillin and other more common antibiotics such as oxacillin, penicillin and amoxicillin. Staph infections, including MRSA, occur most frequently among persons in hospitals and healthcare facilities (such as nursing homes and dialysis centers) who have weakened immune systems.

For information about MRSA in hospitals and healthcare facilities, link to:

• Healthcare-associated MRSA (HA-MRSA)
  background, prevention, surveillance, ...

MRSA infections that are acquired by persons who have not been recently (within the past year) hospitalized or had a medical procedure (such as dialysis, surgery, catheters) are know as CA-MRSA infections.

For information about MRSA acquired outside of hospitals and healthcare facilities, link to:

• Community-associated MRSA (CA-MRSA)
  athletic facilities, correctional facilities, ...

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