Prevalence of diarrheagenic Escherichia coli in children with diarrhea in Salvador, Bahia, Brazil

Autor: 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
Jazyk: angličtina
Rok vydání: 2005
Předmět:
Zdroj: Memorias do Instituto Oswaldo Cruz, Vol 100, Iss 4, Pp 359-363 (2005)
Druh dokumentu: article
ISSN: 0074-0276
1678-8060
DOI: 10.1590/S0074-02762005000400004
Popis: 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.
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