Escherichia coli check for this species in other resources - serotype O111:NM - virulence factors - clinical manifestations - São Paulo - Brazil"/>
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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 97, No. 8, 2002, pp. 1085-1089
Bioline Code: oc02238
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 97, No. 8, 2002, pp. 1085-1089

 en Phenotypic and Genotypic Characteristics of Shiga Toxin-producing Escherichia coli check for this species in other resources Strains Isolated from Children in São Paulo, Brazil
Beatriz EC Guth; Sônia RTS Ramos; Aloysio MF Cerqueira; João RC Andrade & Tânia AT Gomes

Abstract

The biochemical and serological characteristics, virulence properties, and genetic relatedness of Shiga toxin-producing Escherichia coli check for this species in other resources (STEC) strains isolated in São Paulo, from April 1989 through March 1990, were determined. This is also the first report on clinic findings of human STEC infections in Brazil. The only three STEC strains identified in that period were lysine decarboxylase negative, belonged to serotype O111ac: non-motile, were Stx1 producers, carried the eae and astA genes, and 2 of them also presented the EHEC-hly sequence. The children carrying STEC were all boys, with less than two years old, and had no previous history of hospitalization. None of them presented blood in stools. Vomiting, cough and coryza were the most common clinical manifestations observed. Although the STEC strains were isolated during summer months, and presented similar phenotypic and genotypic characteristics, carbohydrate fermentation patterns and PFGE analysis suggested that these diarrheal episodes were not caused by a single clone.

Keywords
Shiga toxin-producing Escherichia coli check for this species in other resources - serotype O111:NM - virulence factors - clinical manifestations - São Paulo - Brazil

 
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