API 20 strep identification system may incorrectly speciate enterococci with low level resistance to vancomycin.
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.
Winston
Lisa G
LG
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
Pang
Szekim
S
Haller
Barbara L
BL
Wong
Margaret
M
Chambers
Henry F
HF
Perdreau-Remington
Francoise
F
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
D014640:Vancomycin