Utility of the VITEK 2 Advanced Expert System for identification of extended-spectrum beta-lactamase production in Enterobacter spp.
Forty clinical isolates of Enterobacter spp. were identified as extended-spectrum beta-lactamase (ESBL) producers by disk diffusion. The VITEK 2 Advanced Expert System (AES) identified the ESBL phenotype in only 25 isolates (62.5%), and erroneously reported cephalosporin susceptibility in 11 isolates (28%). Refinements in the AES are required in order to improve ESBL detection in Enterobacter.
Schwaber
Mitchell J
MJ
Division of Epidemiology, Tel Aviv Sourasky Medical Center, Israel. mitchells@tasmc.health.gov.il
Navon-Venezia
Shiri
S
Chmelnitsky
Inna
I
Leavitt
Azita
A
Schwartz
David
D
Carmeli
Yehuda
Y
D004754:Enterobacter / Q000201:enzymology / Q000302:isolation & purification*; D004756:Enterobacteriaceae Infections / Q000145:classification / Q000382:microbiology; D006801:Humans; D011933:Reagent Kits, Diagnostic; D001618:beta-Lactamases / Q000378:metabolism*
D011933:Reagent Kits, Diagnostic; D001618:beta-Lactamases