First isolation of enteroaggregative Escherichia coli O104:H4 from a diarrhea case in Argentina

We describe the first isolation of an enteroaggregative Escherichia coli (EAEC) O104:H4 strain associated with an acute diarrhea case in Argentina. Two multiplex PCRs (mPCR) were performed as screening of genes mPCR1 (eae, lt, and st) and mPCR2 (IpaH, aggR, stx1 and stx2). A mPCR to detect the rfbO1...

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Main Authors: Claudia C Carbonari, Natalia Deza, Mario Flores, Alejandra Gasparini, Eduardo Manfredi, Marta Rivas
Format: Article
Language:English
Published: Elsevier España 2014-12-01
Series:Revista Argentina de Microbiología
Subjects:
Online Access:http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-75412014000500004&lng=en&tlng=en
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author Claudia C Carbonari
Natalia Deza
Mario Flores
Alejandra Gasparini
Eduardo Manfredi
Marta Rivas
author_facet Claudia C Carbonari
Natalia Deza
Mario Flores
Alejandra Gasparini
Eduardo Manfredi
Marta Rivas
author_sort Claudia C Carbonari
collection DOAJ
description We describe the first isolation of an enteroaggregative Escherichia coli (EAEC) O104:H4 strain associated with an acute diarrhea case in Argentina. Two multiplex PCRs (mPCR) were performed as screening of genes mPCR1 (eae, lt, and st) and mPCR2 (IpaH, aggR, stx1 and stx2). A mPCR to detect the rfbO104, fliC H4 and terD genes, and PCR assays for the detection of pCVD432 plasmid, aaiC and lpfO113 genes were included. Biochemical and antimicrobial susceptibility assays as well as serotyping were performed. The identified E. coli strain was susceptible to all antimicrobials tested and harbored the aggR, aaiC, pCVD432 plasmid, lpfO113, rfbO104, fliC H4 and terD genes. Although serotype EAEC O104:H4 rarely spreads and sporadic cases have been reported, global concern increased after the large-scale outbreak in Europe in 2011. The finding of EAEC O104:H4 reinforces the need for improved methodologies for the detection of all E. coli pathotypes.
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spelling doaj.art-95a944f839f541cd901e8c999623c90a2022-12-22T00:59:03ZengElsevier EspañaRevista Argentina de Microbiología1851-76172014-12-01464302306S0325-75412014000500004First isolation of enteroaggregative Escherichia coli O104:H4 from a diarrhea case in ArgentinaClaudia C Carbonari0Natalia Deza1Mario Flores2Alejandra Gasparini3Eduardo Manfredi4Marta Rivas5ANLIS Dr. Carlos G. MalbránANLIS Dr. Carlos G. MalbránProvincia de ChubutHospital Zonal de TrelewANLIS Dr. Carlos G. MalbránANLIS Dr. Carlos G. MalbránWe describe the first isolation of an enteroaggregative Escherichia coli (EAEC) O104:H4 strain associated with an acute diarrhea case in Argentina. Two multiplex PCRs (mPCR) were performed as screening of genes mPCR1 (eae, lt, and st) and mPCR2 (IpaH, aggR, stx1 and stx2). A mPCR to detect the rfbO104, fliC H4 and terD genes, and PCR assays for the detection of pCVD432 plasmid, aaiC and lpfO113 genes were included. Biochemical and antimicrobial susceptibility assays as well as serotyping were performed. The identified E. coli strain was susceptible to all antimicrobials tested and harbored the aggR, aaiC, pCVD432 plasmid, lpfO113, rfbO104, fliC H4 and terD genes. Although serotype EAEC O104:H4 rarely spreads and sporadic cases have been reported, global concern increased after the large-scale outbreak in Europe in 2011. The finding of EAEC O104:H4 reinforces the need for improved methodologies for the detection of all E. coli pathotypes.http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-75412014000500004&lng=en&tlng=enEscherichia coli enteroagregativoSerotipo O104:H4Diarrea
spellingShingle Claudia C Carbonari
Natalia Deza
Mario Flores
Alejandra Gasparini
Eduardo Manfredi
Marta Rivas
First isolation of enteroaggregative Escherichia coli O104:H4 from a diarrhea case in Argentina
Revista Argentina de Microbiología
Escherichia coli enteroagregativo
Serotipo O104:H4
Diarrea
title First isolation of enteroaggregative Escherichia coli O104:H4 from a diarrhea case in Argentina
title_full First isolation of enteroaggregative Escherichia coli O104:H4 from a diarrhea case in Argentina
title_fullStr First isolation of enteroaggregative Escherichia coli O104:H4 from a diarrhea case in Argentina
title_full_unstemmed First isolation of enteroaggregative Escherichia coli O104:H4 from a diarrhea case in Argentina
title_short First isolation of enteroaggregative Escherichia coli O104:H4 from a diarrhea case in Argentina
title_sort first isolation of enteroaggregative escherichia coli o104 h4 from a diarrhea case in argentina
topic Escherichia coli enteroagregativo
Serotipo O104:H4
Diarrea
url http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-75412014000500004&lng=en&tlng=en
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