title: Utility of the VITEK 2 Advanced Expert System for identification of extended-spectrum beta-lactamase production in Enterobacter spp.
abstract: 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.
authors.affiliation: Division of Epidemiology, Tel Aviv Sourasky Medical Center, Israel. mitchells@tasmc.health.gov.il
authors.forename: Mitchell J
authors.initials: MJ
authors.lastname: Schwaber
authors.forename: Shiri
authors.initials: S
authors.lastname: Navon-Venezia
authors.forename: Inna
authors.initials: I
authors.lastname: Chmelnitsky
authors.forename: Azita
authors.initials: A
authors.lastname: Leavitt
authors.forename: David
authors.initials: D
authors.lastname: Schwartz
authors.forename: Yehuda
authors.initials: Y
authors.lastname: Carmeli
mesh_terms: 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*
chemical_list: D011933:Reagent Kits, Diagnostic; D001618:beta-Lactamases