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Table 5 Molecular and antimicrobial resistance features of high MIC and low MIC MRSA isolates

From: Nosocomial methicillin-resistant Staphylococcus aureus (MRSA) bacteremia in Taiwan: Mortality analyses and the impact of vancomycin, MIC = 2 mg/L, by the broth microdilution method

Characteristic Vancomycin MIC < 2
N = 97 Number of patients (%)
Vancomycin MIC = 2
N = 26
Number of patients (%)
p-value a
SCCmec type    
SCCmec II 24 (24.7) 2 (7.7)  
SCCmec III 52 (53.6) 24 (92.3)  
SCCmec IV 10 (10.3)   
SCCmec V 11 (11.3)   
Spa type    
Spa t037 50 (51.5) 22 (84.6)  
Spa t002 24 (24.7) 2 (7.7)  
Spa t437 18 (18.6) 0 (0)  
Spa t298 1 (1) 0 (0)  
Spa t1081 1 (1) 0 (0)  
Spa t138 0 (0) 1 (3.8)  
Non-typeable 3 (3.1) 1 (3.8)  
Isolates Susceptibility rate    
Erythromycin 2 (2.1) (0) 0.460
Clindamycin 14 (14.4) 1 (3.8) 0.143
Tetracycline 33 (34) 2 (7.7) 0.008
Levofloxacin 20 (20.6) 0 (0) 0.011
TMP/SMZ 45 (46.4) 2 (7.7) < 0.001
Gentamicin 17 (13.4) 0 (0) 0.021
Rifampin 78 (80.4) 16 (61.5) 0.044
  1. a: p-value calculated using a χ2-test