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Volume 11, Number 6—June 2005

Dispatch

Community-associated Methicillin-resistant Staphylococcus aureus, Switzerland

Stephan Harbarth*Comments to Author , Patrice François*, Jacques Schrenzel*, Carolina Fankhauser-Rodriguez*, Stephane Hugonnet*, Thibaud Koessler*, Antoine Huyghe*, and Didier Pittet*
Author affiliations: *University of Geneva Hospitals, Geneva, Switzerland

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Table

Characteristics of patients with community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA), compared to those of patients without MRSA and patients with healthcare-associated MRSA

Characteristic Patients with CA-MRSA (n = 13) (%) Patients without MRSA (n = 1,542) (%) p value* Patients with healthcare-associated MRSA (n = 346) (%) p value†
Mean age (y ± SD) 45 ± 25 70 ± 18 <0.001 75 ± 15 <0.001
Male sex 6 (46) 682 (44) 1.0 199 (58) 0.57
Residency outside Switzerland 6 (46) 10 (1) <0.001 8 (2) <0.001
Healthcare worker 0 (0) 31 (2) 1.0 3 (1) 1.0
Emergency admission 9 (69) 724 (48) 0.17 166 (48) 0.16
Severity of disease
Presence of ≥1 coexisting condition 8 (62) 1,082 (70) 0.55 289 (84) 0.05
Rapidly or ultimately fatal disease 0 277 (18) 0.11 95 (27) 0.02
Complete dependence for daily activities 0 114 (7) 0.62 57 (16) 0.24
Antimicrobial drug exposure
Previous exposure (<6 mo) 1 (8) 318 (21) 0.49 197 (57) <0.001
Current use at admission 3 (23) 148 (10) 0.13 41 (12) 0.21
Presence at admission of indwelling urinary catheter 0 73 (5) 1.0 64 (19) 0.14
Open skin lesions 2 (15) 100 (6) 0.21 65 (19) 1.0

*Community-associated MRSA case-patients versus non-MRSA controls.
†Community-associated MRSA case-patients versus controls with healthcare-associated MRSA strains (SCCmec type I isolates).

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