Analysis of Enterobacteriaceae from WHONET-Argentina database, 2007

Group of isolates analyzed (total no.)% (no.) of isolates with no inhibition zone for AMK or GENa
All Enterobacteriaceae (19,077)2.1 (403)
Enterobacteriaceae minus Enterobacter and Citrobacter spp. (16,906)1.2 (211)*†
Enterobacter spp. (1,730)9.1 (157)*
Citrobacter spp. (441)7.9 (35)†
  • a Absence of inhibition zones for both amikacin and gentamicin. Only one isolate per patient was tested. Symbols indicate significant differences (P < 0.0001) by the chi-square test.