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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 100, No. 4, 2005, pp. 359-363
Bioline Code: oc05097
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 100, No. 4, 2005, pp. 359-363

 en Prevalence of diarrheagenic Escherichia coli check for this species in other resources in children with diarrhea in Salvador, Bahia, Brazil
Marcia Regina Franzolin; Rosely Cabette Barbosa Alves; Rogéria Keller; Tânia Aparecida Tardelli Gomes; Lothar Beutin; Mauricio Lima Barreto; Craig Milroy; Agostino Strina; Hugo Ribeiro & Luiz Rachid Trabulsi

Abstract

We report the frequency of the different diarrheagenic Escherichia coli check for this species in other resources (DEC) categories isolated from children with acute endemic diarrhea in Salvador, Bahia. The E. coli isolates were investigated by colony blot hibridization whit the following genes probes: eae, EAF, bfpA, St×1, St×2, ST-Ih, ST-Ip, LT-I, LT-II, INV, and EAEC, as virulence markers to distinguish typical and atypical EPEC, EHEC/STEC, ETEC, EIEC, and EAEC. Seven of the eight categories of DEC were detected. The most frequently isolated was atypical EPEC (10.1%) followed by ETEC (7.5%), and EAEC (4.2%). EHEC, STEC, EIEC, and typical EPEC were each detected once. The strains of ETEC, EAEC, and atypical EPEC belonged to a wide variety of serotypes. The serotypes of the others categories were O26:H11 (EHEC), O21:H21 (STEC), O142:H34 (typical EPEC), and O?H55 (EIEC). We also present the clinical manifestations and other pathogenic species observed in children with DEC. This is the first report of EHEC and STEC in Salvador, and one of the first in Brazil.

Keywords
typical and atypical enteropathogenic Escherichia coli (EPEC) - Shiga toxin producing E. coli (STEC) - diarrhea - virulence factors

 
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