title: API 20 strep identification system may incorrectly speciate enterococci with low level resistance to vancomycin.
abstract: The API 20 Strep system was used to speciate 46 enterococcal isolates with vancomycin MICs between 16-32 microg/mL. All were identified as Enterococcus faecium. Further testing revealed that 42/46 isolates had been identified incorrectly. Enterococci with low-level vancomycin resistance should not be speciated solely with the API 20 Strep system.
authors.affiliation: Department of Medicine, Division of Infectious Diseases, University of California, San Francisco/San Francisco General Hospital, San Francisco, CA 94110, USA. lisaw@itsa.ucsf.edu
authors.forename: Lisa G
authors.initials: LG
authors.lastname: Winston
authors.forename: Szekim
authors.initials: S
authors.lastname: Pang
authors.forename: Barbara L
authors.initials: BL
authors.lastname: Haller
authors.forename: Margaret
authors.initials: M
authors.lastname: Wong
authors.forename: Henry F
authors.initials: HF
authors.lastname: Chambers
authors.forename: Francoise
authors.initials: F
authors.lastname: Perdreau-Remington
mesh_terms: D015373:Bacterial Typing Techniques / Q000295:instrumentation* / Q000592:standards; D024881:Drug Resistance, Bacterial / Q000235:genetics*; D016983:Enterococcus / Q000145:classification / Q000187:drug effects* / Q000235:genetics / Q000302:isolation & purification; D006801:Humans; D008826:Microbial Sensitivity Tests / Q000295:instrumentation / Q000592:standards; D014640:Vancomycin / Q000494:pharmacology; D020713:Vancomycin Resistance
chemical_list: D014640:Vancomycin