Table 5

Simpson's diversity index by MLST and by antimicrobial resistance status

Resistance level (no. of isolates)No. (%) of isolates MLST typedNo. of MLST cluster typesNo. (%) of isolates in MLST cluster typesaNo. of isolates in MLST unique typesaSimpson's diversity index (%) (95% CI)
Susceptible (74)62 (84)1350 (81)1287 (80–94)
Resistant (43)b39 (91)1237 (95)286 (80–93)
MDR (129)c119 (92)17114 (96)581 (74–87)
Any resistance (172)d154 (90)18147 (95)785 (81–89)
All E. coli isolates (246)220 (89)22201 (91)1989 (86–91)
  • a Cluster, 2 or more isolates; unique, 1 isolate per group.

  • b Resistant to 1 or 2 antimicrobial agents.

  • c Multidrug resistant (≥3 classes).

  • d Resistance to ≥1 class.