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Volume 30, Number 2—February 2024
Research

Rapid Detection of Ceftazidime/Avibactam Susceptibility/Resistance in Enterobacterales by Rapid CAZ/AVI NP Test

Patrice Nordmann, Maxime Bouvier, Adam Delaval, Camille Tinguely, Laurent Poirel, and Mustafa SadekComments to Author 
Author affiliations: University of Fribourg, Fribourg, Switzerland (P. Nordmann, M. Bouvier, A. Delaval, C. Tinguely, L. Poirel, M. Sadek); South Valley University, Qena, Egypt (M. Sadek)

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Figure

Rapid CAZ/AVI NP testing. Bacterial growth is shown by color change of the medium from red to yellow. This test was performed with a ceftazidime/avibactam (CAZ/AVI)–resistant isolate (A2 and B2) and with a CAZ/AVI/susceptible isolate (A3 and B3) in a reaction without (A) and with (B) CAZ/AVI at the defined concentration. The tested isolates (A4 and B4) that grew in the absence and presence of CAZ/AVI were considered positive (CAZ/AVI resistant). Noninoculated wells (A1 and B1) are shown as controls for possible medium contamination.

Figure. Rapid CAZ/AVI NP testing. Bacterial growth is shown by color change of the medium from red to yellow. This test was performed with a ceftazidime/avibactam (CAZ/AVI)–resistant isolate (A2 and B2) and with a CAZ/AVI/susceptible isolate (A3 and B3) in a reaction without (A) and with (B) CAZ/AVI at the defined concentration. The tested isolates (A4 and B4) that grew in the absence and presence of CAZ/AVI were considered positive (CAZ/AVI resistant). Noninoculated wells (A1 and B1) are shown as controls for possible medium contamination.

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Page created: December 12, 2023
Page updated: January 24, 2024
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