Phenotypic and genotypic characteristics of shiga toxin-producing Escherichia coli strains isolated from children in São Paulo, Brazil
Mem. Inst. Oswaldo Cruz
;
97(8): 1085-1089, Dec. 15, 2002. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-326338
ABSTRACT
The biochemical and serological characteristics, virulence properties, and genetic relatedness of Shiga toxin-producing Escherichia coli (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
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Toxina Shiga
/
Diarrea
/
Escherichia coli
/
Infecciones por Escherichia coli
Tipo de estudio:
Estudio observacional
/
Estudio pronóstico
Límite:
Child, preschool
/
Femenino
/
Humanos
/
Lactante
/
Masculino
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Mem. Inst. Oswaldo Cruz
Asunto de la revista:
Medicina Tropical
/
Parasitología
Año:
2002
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade Estadual do Rio de Janeiro/BR
/
Universidade Federal Fluminense/BR
/
Universidade Federal de São Paulo/BR
/
Universidade de São Paulo/BR
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