Table 1

Susceptibilities of ESBL-producing K. pneumoniae isolates to colistin as determined by disc diffusion, Vitek, and Etest

Isolate groupaNo. of isolatesb
Disc diffusion (n = 89)Vitek (n = 134)Etest (n = 134)
Before SDD120028002800
After SDD452843107532074
  • a Isolates are grouped according to whether they were identified before or after the introduction of SDD on the ICU in October 2002.

  • b S, susceptible; I, intermediate; R, resistant.