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Table 1 Susceptibility of MRSA to various antimicrobial agents analyzed by clinical laboratory testing

From: First case report of vancomycin-intermediate sequence type 72 Staphylococcus aureuswith nonsusceptibility to daptomycin

Antimicrobial agent MIC (μg/ml) [interpretation]
Isolate 1 Isolate 1’ Isolate 2 Isolate 3 Isolate 4
Oxacillin >4 [R] >4 [R] >4 [R] >4 [R] >4 [R]
Gentamicin 8 [R] >8 [R] 8 [R] >8 [R] >8 [R]
Erythromycin <0.25 [S] <0.25 [S] <0.25 [S] <0.25 [S] <0.25 [S]
Clindamycin <0.5 [S] <0.5 [S] <0.5 [S] <0.5 [S] <0.5 [S]
Minocycline <2 [S] <2 [S] <2 [S] <2 [S] <2 [S]
Teicoplanin <2 [S] <2 [S] <2 [S] 4 [S] 4 [S]
Vancomycin 1 [S] 2 [S] 1 [S] 2 [S] 4 [I]
Levofloxacin <0.5 [S] <0.5 [S] <0.5 [S] <0.5 [S] <0.5 [S]
Rifampicin <1 [S] <1 [S] >2 [R] >2 [R] >2 [R]
  1. Susceptibilities to the agents in Table 1 were evaluated by broth microdilution (MicroScan; Siemens, Tokyo, Japan).
  2. Isolate 1: blood culture on the first hospital day; Isolate1’: pus from the abscess on the first hospital day; Isolate 2: pus from the abscess on the sixth hospital day; Isolate 3: blood culture on the 40th hospital day; Isolate 4: pus from the abscess on the 55th hospital day. S: Susceptible; I: Intermediate; R: Resistant.