Table 3: MIC distributions and activities of vancomycin, teicoplanin, linezolid and tigecycline against the 135 MRSA strains.

No. of strains with MIC (µg ml-1) MIC50 MIC90 % S
0.064 0.125 0.25 0.5 1 2 4
Vancomycin 0 0 2 59 72 2 0 1 1 100
Teicoplanin 0 2 45 51 28 8 1 0.5 1 99.2
Linezolid 0 0 1 12 55 59 8 1 2 100
Tigecycline 17 46 43 28 1 0 0 0.25 0.5 99.2

MIC50/90, minimum inhibitory concentration which 50%, 90%, respectively of the strains were inhibited.

S: Susceptible.