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- W3108860468 abstract "ObjectivesEscherichia coli is one of the most potential agents of community and hospital-acquired infections, which can readily acquire non-susceptibility to drugs administered to animals and humans. E. coli, which has been broadly applied as an indicator of fecal contamination in aquatic environments, is routinely conducted non-virulence. Nevertheless, some isolates can be virulence. The main objectives of this work were to survey antibiotic non-susceptibility and to characterize virulence factors and antibiotic resistance genes including traT, fimH, blaCTX, and tetA among the E. coli isolates recovered from sewage in Gonabad, in the northeast of Iran.Materials and MethodsIn this cross-sectional study, a total of 99 non-duplicate strains of E. coli was removed from three types of sewage including poultry (33 isolates), urban (33), and livestock slaughterhouse (33) sewages in Gonabad from May 2016 to April 2017. Then, the antimicrobial susceptibility test and extended-spectrum-beta-lactamase (ESBL) production were done based on CLSI guidelines, followed by performing the polymerase chain reaction technique to identify 2 virulence (traT and fimH) and 2 antibiotic resistance (blaCTX and tetA) genes.ResultsMeropenem was the most effective drug against the strains. The analysis of multiple drug non-susceptibility profiles in the strains showed that 39 (39.3%) strains were TR-NAR and three (3.03%) of them were resistant to colistin. Totally, 21 (21.2%) strains were ESBL-positive and 15 (71.42%) ESBL+ isolates carried blaCTX gene whereas 87.9% and 100% of the strains in the livestock slaughterhouse and urban sewages carried the tetA gene, respectively. Finally, 85.7% of ESBL-positive isolates carried the fimH gene. Overall, 19.8% of ESBL-positive strains carried fimH and traT virulence genes (fimH+-traT+ genotype).ConclusionsBased on the findings of this study, wastewater and surface waters are considered as significant sources of E. coli carrying ESBL-genes, high levels of antibiotic non-susceptibility, and pathogenesis traits. Eventually, the identified colistin nonsusceptible strains are quite worrying" @default.
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- W3108860468 date "2020-10-01" @default.
- W3108860468 modified "2023-09-23" @default.
- W3108860468 title "Pathogenesis Traits and Antimicrobial Resistance Pattern in Escherichia coli Isolates Recovered From Sewage" @default.
- W3108860468 hasPublicationYear "2020" @default.
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