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Title: Prevalence of diarrheagenic Escherichia coli in children with diarrhea in Salvador, Bahia, Brazil
Authors: Franzolin, Marcia Regina
Alves, Rosely Cabette Barbosa
Keller, Rogéria
Gomes, Tania Aparecida Tardelli [UNIFESP]
Beutin, Lothar
Barreto, Mauricio Lima
Milroy, Craig
Strina, Agostino
Ribeiro, Hugo
Trabulsi, Luiz Rachid
Instituto Butantan Laboratório Especial de Microbiologia
Universidade Federal de São Paulo (UNIFESP)
Robert Koch Institut Division of Emerging Bacterial Pathogens
Instituto de Saúde Coletiva
Universidade Federal da Bahia Departamento de Pediatria
Keywords: typical and atypical enteropathogenic Escherichia coli (EPEC)
Shiga toxin producing E. coli (STEC)
virulence factors
Issue Date: 1-Jul-2005
Publisher: Instituto Oswaldo Cruz, Ministério da Saúde
Citation: Memórias do Instituto Oswaldo Cruz. Instituto Oswaldo Cruz, Ministério da Saúde, v. 100, n. 4, p. 359-363, 2005.
Abstract: We report the frequency of the different diarrheagenic Escherichia coli (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, Stx1, Stx2, 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.
ISSN: 0074-0276
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