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Comparison of Enterohemorrhagic Escherichia coli (EHEC) O157 and EHEC Non-O157 Isolates from Patients with Diarrhea in Korea

Authors :
Kyung-Hwan Oh
Eunkyung Shin
Gyung Tae Chung
Seung-Hak Cho
Su-Mi Jung
Won-Keun Seong
Source :
Japanese Journal of Infectious Diseases. 70:320-322
Publication Year :
2017
Publisher :
Editorial Committee of Japanese Journal of Infectious Diseases, National Institute of Infectious Dis, 2017.

Abstract

We compared 47 enterohemorrhagic Escherichia coli (EHEC) O157 isolates with 184 EHEC non-O157 isolates from Korean patients with diarrhea. In the O157 group, the strains harboring both Shiga toxin genes (stx1 and stx2) were detected with highest frequency, whereas the strains harboring only stx1 gene were most frequently detected in the non-O157 group. Eight virulence genes (eaeA, hlyA, ehx, iha, efa1, tir, toxB, and espA) were found to show a higher frequency of occurrence in the O157 group than in the non-O157 group. In addition, the symptom of bloody diarrhea was exhibited at a higher rate in the O157 group (51.1%) than in the non-O157 group (16.8%). Our findings demonstrate that EHEC O157 strains are more frequently implicated in cases of bloody diarrhea in the Korean population than EHEC non-O157 strains.

Details

ISSN :
18842836 and 13446304
Volume :
70
Database :
OpenAIRE
Journal :
Japanese Journal of Infectious Diseases
Accession number :
edsair.doi...........d27324f6ec3875fed9d6c82c2bd84933