Fig. 1. Distribution of inhibition zone diameters and MICs of 149 BFG isolates for nine antibiotics. The numbers in the figures represent isolate counts. Red letters on the axis represent MIC or zone diameter breakpoints for resistance. Solid black and dashed lines represent CLSI MIC values for resistance and intermediate resistance, respectively. Dash-dot lines indicate EUCAST MIC values for resistance (A–I). Red vertical lines represent zone diameter breakpoints for resistance (A–F). The gray zone represents the ATU in this study (G–I).
Abbreviations: BFG, B. fragilis group; MIC, minimum inhibitory concentration; EUCAST, European Committee on Antimicrobial Susceptibility Testing; ATU, area of technical uncertainty.

Ann Lab Med 2025;45:70~76 https://doi.org/10.3343/alm.2024.0159