High Rates of Intestinal Colonization With Extended-Spectrum Lactamase-Producing Enterobacteriaceae Among Healthy Individuals

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Abstract

Background

Infections caused by extended-spectrum β-lactamase (ESBL)–producing bacteria become an emerging problem in the community setting in many parts of the world.

Objective

The objective of the study was to determine fecal carriage of ESBL-producing organisms in a community setting.

Methods

A total of 632 fecal specimens from healthy individuals were screened for ESBL using the agar screening test with MacConkey agar plates supplemented with 1 μg/mL of cefotaxime for selection of ESBL-producing strains and confirmed by the Clinical Laboratory Standards Institute combined disk method.

Results

Four hundred isolates (63.3%) were ESBL producers. Two hundred eighty-five isolates (71.25%) of them were Escherichia coli and 96 (24.0%) Klebsiella pneumoniae.

Conclusion

We concluded that the community could be a reservoir of these ESBL-producing bacteria and enzymes.

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