Emerging Antibiotic Resistance, Medical and Molecular Microbiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland.
Emerging Antibiotic Resistance, Medical and Molecular Microbiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland; Swiss National Reference Center for Emerging Antibiotic Resistance, Fribourg, Switzerland.
Emerging Antibiotic Resistance, Medical and Molecular Microbiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland; Swiss National Reference Center for Emerging Antibiotic Resistance, Fribourg, Switzerland; INSERM European Unit (LEA), (IAME, Paris) University of Fribourg, Fribourg Switzerland.
Institute for Microbiology, Lausanne University hospital and University of Lausanne, Lausanne, Switzerland.
Institute for Microbiology, Lausanne University hospital and University of Lausanne, Lausanne, Switzerland; Service of Hospital Preventive Medicine, Lausanne University hospital and University Hospital, Lausanne, Switzerland.
Emerging Antibiotic Resistance, Medical and Molecular Microbiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland; Swiss National Reference Center for Emerging Antibiotic Resistance, Fribourg, Switzerland; INSERM European Unit (LEA), (IAME, Paris) University of Fribourg, Fribourg Switzerland; Institute for Microbiology, Lausanne University hospital and University of Lausanne, Lausanne, Switzerland. Electronic address: patrice.nordmann@unifr.ch.
The NG-Test CTX-M MULTI immunochromatographic assay has been developed to identify CTX-M-type β-lactamases in Enterobacterales, being the most widespread extended-spectrum β-lactamases. We showed here that the chromosomally-encoded ß-lactamases from Citrobacter farmeri and Citrobacter amalonaticus generated false-positive NG-Test CTX-M MULTI results, compromising the specificity of the test.
Keywords: CdiA β-lactamases; Immunochromatographic assay; NG-Test CTX-M MULTI
