Methicillin-resistant Staphylococcus aureus (MRSA) | Overview

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What is MRSA?

MRSA is a type of staph infection. “Staph” is the common name for the Staphylococcus aureus bacteria.

MRSA stands for “methicillin-resistant Staphylococcus aureus.” The infection is resistant to the antibiotic methicillin, as well as some other common antibiotics (such as oxacillin, penicillin and amoxicillin). This makes MRSA infection hard to treat.

Two main types of MRSA have been identified. These are community-associated MRSA (CA-MRSA) and health care-associated MRSA (HA-MRSA). CA-MRSA was once rare but is becoming more common. HA-MRSA accounts for well over half of the total number of staph infections.

Written by familydoctor.org editorial staff

Reviewed/Updated: 03/14
Created: 07/09

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