TABLE 2.

Numbers and percentages of isolates tested by Etest and the WIDER system showing differences in log2 dilutions from the results of the reference broth microdilution method

Antibiotic and testNo. (%) of isolates showing a log2 dilution difference of:
>−3−3−2−10123>3
Imipenem
    Etest3 (17)4 (22)5 (28)4 (22)2 (11)
    WIDER6 (33)1 (6)3 (17)1 (6)5 (28)2 (11)
Meropenem
    Etest5 (28)9 (50)3 (17)1 (6)
    WIDER1 (6)3 (17)3 (17)4 (22)2 (11)4 (22)1 (6)
Ertapenem, Etest1 (6)1 (6)9 (50)5 (28)1 (6)1 (6)