Correlation of MIC value and disk inhibition zone diameters in clinical Legionella pneumophila serogroup 1 isolates.

Abstract:

OBJECTIVES:Routine use of disk diffusion tests for detecting antibiotic resistance in Legionella pneumophila has not been described. The goal of this study was to determine the correlation of MIC values and inhibition zone diameter (MDcorr) in clinical L. pneumophila isolates. METHODS:Inhibition zone diameter of 183 L. pneumophila clinical isolates were determined for ten antimicrobials. Disk diffusion results were correlated with MICs as determined earlier with E-tests. RESULTS:Overall the correlation of MIC values and inhibition zone diameters (MDcorr) of the tested antimicrobials is good, and all antimicrobials showed a WT distribution. Of the tested fluoroquinolones levofloxacin showed the best MDcorr. All macrolides showed a wide MIC distribution and good MDcorr. The MDcorr for cefotaxim, doxycycline and tigecycline was good, while for rifampicin and moxifloxacin, they were not. CONCLUSION:Overall good correlation between MIC value and disk inhibition zone were found for the fluoroquinolones, macrolides and cefotaxim.

authors

Bruin JP,Diederen BM,Ijzerman EP,Den Boer JW,Mouton JW

doi

10.1016/j.diagmicrobio.2013.03.001

subject

Has Abstract

pub_date

2013-07-01 00:00:00

pages

339-42

issue

3

eissn

0732-8893

issn

1879-0070

pii

S0732-8893(13)00133-8

journal_volume

76

pub_type

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