Whole-Genome Characterization and Strain Comparison of VT2f-Producing Escherichiacoli Causing Hemolytic Uremic Syndrome
Published Date:Dec 15 2016
Source:Emerg Infect Dis. 22(12):2078-2086.
Hemolytic Uremic Syndrome
Variant Verotoxigenic Escherichia Coli
Whole-Genome Characterization And Strain Comparison Of VT2f-Producing Escherichiacoli Causing Hemolytic Uremic Syndrome
Pubmed Central ID:PMC5189129
Description:Verotoxigenic Escherichia coli infections in humans cause disease ranging from uncomplicated intestinal illnesses to bloody diarrhea and systemic sequelae, such as hemolytic uremic syndrome (HUS). Previous research indicated that pigeons may be a reservoir for a population of verotoxigenic E. coli producing the VT2f variant. We used whole-genome sequencing to characterize a set of VT2f-producing E. coli strains from human patients with diarrhea or HUS and from healthy pigeons. We describe a phage conveying the vtx2f genes and provide evidence that the strains causing milder diarrheal disease may be transmitted to humans from pigeons. The strains causing HUS could derive from VT2f phage acquisition by E. coli strains with a virulence genes asset resembling that of typical HUS-associated verotoxigenic E. coli.
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