Table 1.
Median azithromycin inhibition zone diameters of Enterobacteriaceae and P. aeruginosa on Mueller–Hinton (MH) and RPMI-1640 agar.
| Family | Species | n | MH [mm] | RPMI-1640 [mm] |
|---|---|---|---|---|
| E. coli | 28 | 15.5 (12–17) | 24 (18.5–26.75) *** | |
| Enterobacteriaceae | E. cloacae | 24 | 9 (6–11) | 17.5 (15.25–19) *** |
| K. pneumoniae | 26 | 11.5 (9–12.25) | 19 (16.75–21) *** | |
| Pseudomonadaceae | P. aeruginosa | 55 | 6 (6–7) | 9 (7–15) *** |
Azithromycin inhibition zone diameters of Enterobacteriaceae (E. coli, E. cloacae, K. pneumoniae) and P. aeruginosa isolates (26 originating from the University Hospital Zurich (USZ), 29 from four different European study centers) on MH and RPMI-1640 agar. Each isolate was tested in two independent experiments. Data show median + interquartile range. Nonparametric Mann-Whitney Test, *** < 0.0001. Disk size: 6 mm, 15 µg azithromycin. n = number of tested clinical isolates.