Reliability of the E-Test Method for Detection of Colistin Resistance in Clinical Isolates of Acinetobacter baumannii
Open Access
- 1 February 2005
- journal article
- research article
- Published by American Society for Microbiology in Journal of Clinical Microbiology
- Vol. 43 (2) , 903-905
- https://doi.org/10.1128/jcm.43.2.903-905.2005
Abstract
We compared the E-test to the broth microdilution method for testing the susceptibility of 115 clinical isolates of Acinetobacter baumannii to colistin. Twenty-two (19.1%) strains were resistant to colistin and 93 (80.8%) strains were susceptible according to the reference broth microdilution method. A categorical agreement of 98.2% was found, with only two (1.7%) very major errors. Agreement within 1 twofold dilution between the E-test and the broth microdilution was 16.5%. Complete agreement was found for the strains for which MICs fell within the range of 0.25 to 1 μg of colistin/ml. However, there was poor concordance, particularly in extreme dilutions with higher MICs by the E-test method.This publication has 19 references indexed in Scilit:
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