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

Memórias do Instituto Oswaldo Cruz

Marcia Regina Franzolin²  Rosely Cabette Barbosa Alves²  Rogéria Keller²  Tânia Aparecida Tardelli Gomes¹  Lothar Beutin¹  Mauricio Lima Barreto¹  Craig Milroy¹  Agostino Strina¹  Hugo Ribeiro²  Luiz Rachid Trabulsi¹ 

[1] ,Instituto Butantan Laboratório Especial de Microbiologia São Paulo SP ,Brasil

关键词: typical and atypical enteropathogenic Escherichia coli (EPEC);    Shiga toxin producing E. coli (STEC);    diarrhea;    virulence factors;   

DOI  :  10.1590/S0074-02762005000400004

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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