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Volume 17, Number 1—January 2011


Emergence of New Delhi Metallo-β-Lactamase, Austria

Gernot Zarfel, Martin Hoenigl, Eva Leitner, Helmut J.F. Salzer, Gebhard Feierl, Lilian Masoud, Thomas Valentin, Robert Krause, and Andrea J. GrisoldComments to Author 
Author affiliations: Author affiliation: Medical University of Graz, Graz, Austria

Main Article


Antimicrobial drug susceptibilities of New Delhi metallo-β-lactamase strains isolated from 2 patients, Graz, Austria, 2010*

MIC, mg/L
Patient 1 isolate
Patient 2 isolate
Colistin 0.125 0.125
Tigecycline 2 0.125
Amikacin 8 2

*Only substances for which isolates had susceptibility are listed. MICs were determined by the Etest method (AB BIODISK, Solna, Sweden). Susceptibility was determined according to relevant testing conditions and the new susceptibility interpretation standards proposed by the Clinical and Laboratory Standards Institute (

Main Article

1These authors contributed equally to this work.