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

Table 2 Susceptibility of MRSA to daptomycin as analyzed by clinical laboratory testing

Method	Daptomycin MIC (μg/ml) [interpretation]
Method	Isolate 1	Isolate 1’	Isolate 2	Isolate 3	Isolate 4
MicroScan (Siemens, Tokyo, Japan)	≤0.5 [S]	≤0.5 [S]	≤0.5 [S]	>1 [NS]	>1 [NS]
Frozen plate (Eiken, Tokyo, Japan)	0.5 [S]	0.5 [S]	0.25 [S]	1 [S]	1.5 [NS]
Etest® (bioMérieux, Marcy-l'Étoile, France)	0.125 [S]	0.125 [S]	0.125 [S]	1 [S]	1.5 [NS]

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; NS: Nonsusceptible.

ISSN: 1471-2334