title: Lack of virulence factors in Escherichia coli strains of enteropathogenic serogroups isolated from water.
abstract: Thirty-eight Escherichia coli strains belonging to 14 human enteropathogenic serogroups were isolated from 33 of 208 water samples studied. No virulence factor or virulence-related gene sequences were found in any of the 38 strains analyzed. The results point out the importance of detecting specific virulence factors before incriminating water as a source of human diarrhea.
authors.affiliation: Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas de Araraquara, Universidade Estadual Paulista, Araraquara, SP, Brazil.
authors.forename: S R
authors.initials: SR
authors.lastname: Valentini
authors.forename: T A
authors.initials: TA
authors.lastname: Gomes
authors.forename: D P
authors.initials: DP
authors.lastname: Falcão
mesh_terms: D004926:Escherichia coli / Q000145:classification / Q000302:isolation & purification / Q000472:pathogenicity*; D006367:HeLa Cells; D006801:Humans; D012703:Serotyping; D014774:Virulence; D014871:Water Microbiology