Por favor, use este identificador para citar o enlazar este ítem:
https://www.arca.fiocruz.br/handle/icict/38000
Tipo
ArtículoDerechos de autor
Acceso restringido
Fecha del embargo
2022-01-01
Colecciones
- AM - ILMD - Artigos de Periódicos [322]
- IOC - Artigos de Periódicos [12500]
Metadatos
Mostrar el registro completo del ítem
OUTBREAKS OF CHOLERA-LIKE DIARRHOEA CAUSED BY ENTEROTOXIGENIC ESCHERICHIA COLI IN THE BRAZILIAN AMAZON RAINFOREST
Autor
Afiliación
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Genética. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Genética. Rio de Janeiro, RJ, Brasil / Universidade Federal de Ouro Preto. Outro Preto, MG, Brasil.
La Habana Universoty. La Habana, Cuba.
Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Centro de Pesquisas Leônidas e Maria Deane. Manaus, AM, Brasil.
Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.
Universidade de São Paulo. São Paulo, SP, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Genética. Rio de Janeiro, RJ, Brasil / Universidade Federal de Ouro Preto. Outro Preto, MG, Brasil.
La Habana Universoty. La Habana, Cuba.
Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Centro de Pesquisas Leônidas e Maria Deane. Manaus, AM, Brasil.
Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.
Universidade de São Paulo. São Paulo, SP, Brasil.
Resumen en ingles
The relationship between enteropathogens and severe diarrhoea in the Brazilian Amazon is poorly understood. In 1998, outbreaks of acute diarrhoea clinically diagnosed as cholera occurred in two small villages localized far from the main cholera route in the Brazilian rainforest. PCR was performed on some enteropathogens and heat-labile (LT) and/or heat-stable (STh) toxin genes, the virulence determinants of enterotoxigenic Escherichia coli (ETEC), were detected. Further characterization of ETEC isolates revealed the presence of two clones, one from each outbreak. One presenting serotype O167:H5 harboured LT-I and STh toxin genes and expressed the CS5CS6 colonization factor. The other, a non-typeable serotype, was positive for the LT-I gene and expressed the CS7 colonization factor. The current study demonstrates the importance of molecular diagnosis in regions such as the Amazon basin, where the enormous distances and local support conditions make standard laboratory diagnosis difficult. Here we also show that the mis-identified cholera cases were in fact associated with ETEC strains. This is the first report of ETEC, molecularly characterized as the aetiological agent of severe diarrhoea in children and adults in the Brazilian Amazon Rainforest.
Compartir