Shorr Score – MRSA Pneumonia

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Shorr Score for MRSA Pneumonia Calculator

Shorr Score for MRSA Pneumonia

This calculator estimates MRSA risk in patients presenting to the hospital with pneumonia and is mainly used to identify patients at low risk for MRSA.

Risk factors

Applies if the patient is a young adult or age 80+.
+1
Within the last 90 days.
+1
Within the last 30 days.
+1
Within the last 90 days.
+2
On or before index culture.
+2
Present before admission.
+1
Known dementia diagnosis.
+1
Applies only when both female sex and diabetes mellitus are present.
+1

References

  1. Shorr AF, Myers DE, Huang DB, Nathanson BH, Emons MF, Kollef MH. A risk score for identifying methicillin-resistant Staphylococcus aureus in patients presenting to the hospital with pneumonia. BMC Infectious Diseases. 2013;13:268. doi:10.1186/1471-2334-13-268.
  2. Teshome BF, Vouri SM, Hampton N, Kollef MH, Micek ST. Application of a methicillin-resistant Staphylococcus aureus risk score for community-onset pneumonia patients and outcomes with initial treatment. BMC Infectious Diseases. 2015;15:380. doi:10.1186/s12879-015-1119-1.
  3. MDCalc. Shorr Score for MRSA Pneumonia calculator. Accessed 2026.

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