TABLE 3.

Comparison among MICs to 10 antibiotics of MRSA strains isolated in each period

AntibioticMIC (μg/ml) of MRSA isolated in:
1979 to 19851999
50%90%50%90%
Oxacillin32128256>512
Ceftizoxime>512>512>512>512
Imipenem0.56432128
Ampicillin642563264
Gentamicin12851232128
Tobramycin128512256512
Erythromycin>512>512>512>512
Tetracycline246464
Levofloxacin0.250.5864
Ciprofloxacin12NTaNT
  • a NT, not tested.