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- W2943326054 abstract "Extended-Spectrum Beta–lactamase producing Enterobacteriales (ESBL-PE) in fecal carriage have become a global health concern. Detection of putative virulent ESBL-producing E.coli (ESBL-EC) isolates among asymptomatic carriers is a threatening issue in public health. The aim of this study was to investigate the intestinal carriage of ESBL-EC, phylo-groups and clonal relatedness among putative virulent groups of ESBL-EC isolated from fecal carriages. A total of 120 rectal swabs; 50.8% (61/120) from inpatients of intensive care unit (ICU) and 49.2% (59/120) from outpatients were collected. The ESBL-EC screening was performed by using MacConkey agar supplemented with cefotaxime. PCR assays were applied for determination of phylo-groups, detection of ESBL and carbapenemase genes. Conjugation experiment, plasmid replicon typing and Multilocus Sequence Typing (MLST) were performed for putative virulent phylo-groups. Totally, of 120 studied individuals, 60.0% (72/120) were carrier for ESBL-EC. The rate of blaCTX-M-15, blaTEM, blaSHV was 90.2% (65/72), 50.0% (36/72) and 5.5% (4/72), respectively. The frequency of phylo-groups A, B1, B2, C, D, and F were 20.8% (15/72), 6.9% (5/72), 20.8% (15/72), 2.7% (2/72), 13.8 (10/72) and 12.5% (9/72), respectively. In conjugation experiments, of 6 tested isolates, 5 had conjugative plasmids. The most prevalent plasmid types belonged to IncF incompatibility groups. The MLST analysis showed that the main sequence types among ESBL-EC isolates were ST769 and ST472. The current study provides novel information about the presence of the ESBL-EC isolates, particularly putative virulent phylo-groups among fecal carriages in Iran. Our data revealed that there was almost high ST heterogeneity among putative ESBL-EC isolates. In order to implementation of effective infection control program, detection of fecal carriage in appropriate time typically at the beginning of admission to the hospital is recommended." @default.
- W2943326054 created "2019-05-09" @default.
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- W2943326054 date "2019-09-01" @default.
- W2943326054 modified "2023-10-14" @default.
- W2943326054 title "Considerable rate of putative virulent phylo-groups in fecal carriage of extended-spectrum β-lactamase producing Escherichia coli" @default.
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- W2943326054 doi "https://doi.org/10.1016/j.meegid.2019.04.035" @default.
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