TABLE 7.

Variation in MIC and zone category from testing nine problem Acinetobacter spp. in six laboratories

StrainMethodNo. of isolates in categorya
Ampicillin- sulbactamPiperacillin- tazobactamPipera- cillinCefta- zidimeCefepime
SbIbRbSIRSIRSIRSIR
1235MIC51512424212
Disk6415166
1266MIC6245142212
Disk662466
1974MIC66335151
Disk66666
1975MIC336666
Disk66666
5065MIC1555145
Disk512312466
8213MIC155533132
Disk424242516
24318MIC662466
Disk66666
24325MIC6413366
Disk664266
2241MIC51514132122
Disk6335166
  • a When the total number of results is <6, a laboratory reported that MICs were uninterpretable.

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