Methicillin-resistant Staphylococcus Aureus (MRSA)

MRSA Chart

MRSA DashboardWhat is it?
Methicillin-resistant Staphylococcus aureus bacteria are present on skin and in the nose of approximately 30 percent of the population. However, most individuals do not have symptoms of illness. Illness occurs when skin is broken and the bacteria enter the body through incisions, wounds or scratches. When MRSA enters the body, it is difficult to treat because the bacteria is resistant to commonly used antibiotics, including penicillin and methicillin. MRSA infections often appear around surgical wounds or through invasive devices, such as catheters or implanted feeding tubes. MRSA is common among individuals who have weak immune systems, including those in hospitals and nursing homes. Community-acquired MRSA often results in skin infections.

How's it measured?
The rate is per 1,000 patient days. Patient days are a unit in a system of accounting used by health care facilities and health care planners. Each day represents a unit of time during which the services of the institution or facility are used by a patient; thus, 50 patients in a hospital for one day would represent 50 patient days.

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Last updated July 2019.