Fecal Carriage of Antimicrobial-Resistant Enterobacteriaceae in Healthy Korean Adults.

The spread of antibiotic-resistant Enterobacteriaceae in the community is one of the main challenges for antibiotic treatment of community-onset infections. We evaluated the microbiological and molecular characteristics of stool samples from adults with comprehensive health examinations. Of 109 fecal samples, bacterial growth was observed in 86 samples and 61 gram-negative bacterial isolates were identified, of which 45 were isolates (73.8%). Two isolates of showed imipenem resistance, and both and showed intermediate resistance to imipenem. Colistin resistance was identified in isolates of and , but no isolates carried . As for genotypes, 35 sequence types were identified. , and were identified in 15, 1, and 4 isolates, respectively. In addition, all four isolates carried . Many genotypes that have been identified in isolates causing human infections were found in isolates in this study. There is a need to control the rise and spread of antibiotic-resistant pathogens by fecal carriage.