TABLE 1.

MIC50s and MIC90s from the MYSTIC database, 1997 to spring 2002

Organism(s)No. of isolatesMeropenemImipenem-cilastatin
MIC50MIC90MIC50MIC90
S. aureus5,937≤0.25≤0.25≤0.25≤0.25
Klebsiella spp.3,884≤0.25≤0.25≤0.250.5
Enterobacter spp.4,005≤0.25≤0.250.51.0
Serratia spp.1,145≤0.25≤0.250.51.0
Acinetobacter spp.1,7481.032.01.016.0
P. aeruginosa6,5001.016.02.016.0