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Type: Artigo de periódico
Title: Prevalence Of Virulence Factors In Escherichia Coli Isolated From Healthy Animals And Water Sources In Brazil.
Author: Carlos, Camila
Alexandrino, Fabiana
Vieira, Monica A M
Stoppe, Nancy C
Sato, Maria Inês Z
Gomes, Tânia A T
Ottoboni, Laura M M
Abstract: The aim of this work was to verify the presence of seven virulence factors (ST, LT, eae, stx(1), stx(2), INV and EAEC) among Escherichia coli strains isolated from healthy humans, bovines, chickens, sheep, pigs and goats, from two sewage treatment plants and from the Tietê River. We have found a high prevalence of eae, stx(1) and stx(2) in ruminants. The EAEC gene was only found in humans and sewage. No strains presented ST, LT or INV. BOX-PCR fingerprints revealed a high diversity among the strains analysed and a non-clonal origin of strains that presented the same virulence factors. Therefore, we concluded that ruminants may constitute an important reservoir of most diarrheagenic E. coli in Brazil, except for EAEC strains. These results emphasize the importance of the identification of the animal source of fecal contamination for the correct water risk assessment.
Subject: Animals
Animals, Domestic
Escherichia Coli
Escherichia Coli Proteins
Polymerase Chain Reaction
Shiga Toxins
Virulence Factors
Water Supply
Citation: Journal Of Water And Health. v. 9, n. 1, p. 138-42, 2011-Mar.
Rights: fechado
Identifier DOI: 10.2166/wh.2010.068
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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