There were no very major errors observed in any analysis. ![]() None of the three methods met equivalency for the 33 MDR isolates. ![]() pneumoniae, only the Etest and the 10/4 μg disc met the equivalency threshold. Against the 69 ceftazidime- and meropenem-resistant K. The Etest performed the best, with categorical agreement of 95% and major errors of 6.3%. None of the three methods met the defined equivalency threshold against all 102 organisms. Essential and categorical agreement along with major and very major error rates were determined according to CLSI guidelines.Ī total of 78% of isolates were susceptible to ceftazidime/avibactam. The performances of the Etest (bioMérieux), 30/20 μg disc (Hardy diagnostics) and 10/4 μg disc (Mast Group) were evaluated against the reference broth microdilution (BMD) method for 102 clinically relevant Gram-negative organisms: 69 ceftazidime- and meropenem-resistant Klebsiella pneumoniae and 33 MDR non-K. ![]() ![]() To ensure the accuracy of susceptibility testing methods for ceftazidime/avibactam.
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