[Molecular characterization of diarrheagenic Escherichia coli from an outpatient pediatric population with diarrhea attended in two hospitals from Buenos Aires, Argentina].

Diarrheagenic Escherichia coli comprises a heterogeneous group of pathotypes or pathogenic variants that share phenotypic characteristics with marked differences in virulence genes, colonization sites, pathogenesis, clinical presentation, and epidemiology of infection. The most studied pathotypes are Shiga toxin-producing E.coli (STEC), enterotoxigenic E.