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- W3164651933 abstract "Shiga toxin-producing Escherichia coli (STEC) is a water- and food-borne pathogenic agent that causes diarrhea, hemorrhagic colitis, hemolytic uremic syndrome (HUS), and end-stage renal disease. As the annual incidence of STEC increases, disease control is also becoming important in Korea. In this study, we aimed to analyze the incidence trends and characteristics of STEC isolated from diarrheal patients over 10 years. From 2009 to 2018, STECs were collected by the Enteric Pathogens Active Surveillance Network (Enter-Net) and analyzed according to clinical epidemiological information (month of isolation, age, and sex of patient), O serogroup, and shiga toxin type. Shiga toxin genes (stx1 and stx2) and O serogroups of isolates were determined using multiplex PCR and an agglutination method with the available O antisera, respectively. A total of 418 strains were isolated over 10 years. The isolation rate according to age group and season was highest in children ≤4 years old (38.1%) and in the summer season (June to August). Among the 418 isolates, the major serogroups were divided O157 (20.3%), O103 (13.6%), O26 (7.7%), O111 (5.5%), O91 (4.3%), O108 (2.4%), and O8 (2.2%). The most frequently isolated O157 showed a lower isolation rate compared to that isolated from other developed countries. The profiles of stx genes were distinct among serogroups. In O157 and O91, stx1+stx2 was detected more frequently than either stx1 or stx2 alone. Particularly, most of the O157 (98%) isolates harbored the stx2 gene, which is an important factor in severe diseases, including HUS. In O103, O26, O111, and O108, stx1-only was more frequently present than stx2-only or stx1+stx2. As a result of analyzing domestic STECs collected through Enter-Net, it was confirmed that patients ≤4 years of age and in the summer months require attention, and that STEC with a serogroup of O157 is highly likely to cause diseases such as HUS. Therefore, the pathogen active surveillance network for characterization and provision of STEC isolates must be operated continuously." @default.
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- W3164651933 date "2021-09-01" @default.
- W3164651933 modified "2023-09-27" @default.
- W3164651933 title "The prevalence and characteristics of Shiga toxin-producing Escherichia coli isolated by the enteric pathogens active surveillance network (Enter-Net) in the Republic of Korea, 2009–2018" @default.
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- W3164651933 doi "https://doi.org/10.1016/j.micpath.2021.105005" @default.
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