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Frequency, characterization and genotypic analysis of Shiga toxin-producing Escherichia coli in beef slaughterhouses of Argentina = Frecuencia, caracterización y análisis genotípico de Escherichia coli productor de toxina Shiga en frigoríficos de carne bovina de Argentina
Cap, Mariana; Carbonari, Claudia Carolina; D’Astek, Beatriz A.; Zolezzi, Gisela; Deza, Natalia; Palladino, Pablo Martin; Masana, Marcelo Oscar; Chinen, Isabel; Rivas, Marta (2018-06-22)The objectives of this study were: (1) to estimate STEC frequency in hide and carcass samples taken from beef slaughterhouses supplying the domestic market in Argentina, (2) to establish the pheno-genotypic characteristics ... -
Genetic features of human and bovine Escherichia coli O157: H7 strains isolated in Argentina
Masana, Marcelo Oscar; Pianciola, Luis; D’Astek, Beatriz A.; Mazzeo, Melina Leonor; Chinen, Isabel; Rivas, Marta (2016-02-15)Shiga toxin-producing Escherichia coli (STEC) are important food-borne pathogens associated with human diseases. In Argentina, O157:H7 is the dominant serotype in hemolytic uremic syndrome (HUS) cases. Previously, we have ... -
Risk factors for shiga toxin-producing Escherichia coli-associated human diseases
Rivas, Marta; Chinen, Isabel; Miliwebsky, Elizabeth; Masana, Marcelo Oscar (American Society for Microbiology, 2014)We have reviewed the risk factors for the occurrence of Shiga toxin-producing Escherichia coli (STEC)-associated human diseases. The analysis of STEC surveillance data and trends shows differences in frequency and severity ... -
Shiga toxin-producing Escherichia coli (STEC) O22:H8 isolated from cattle reduces E. coli O157:H7 adherence in vitro and in vivo
Martorelli, Luisina; Albanese, Adriana Andrea; Vilte, Daniel Alejandro; Cantet, Rodolfo Juan Carlos; Bentancor, Adriana Beatriz; Zolezzi, Gisela; Chinen, Isabel; Ibarra, Cristina E.; Rivas, Marta; Mercado, Elsa Cristina; Cataldi, Angel Adrian (2017-09)Problem addressed: Shiga toxin-producing Escherichia coli (STEC) are a group of bacteria responsible for foodassociated diseases. Clinical features include a wide range of symptoms such as diarrhea, hemorrhagic colitis and ... -
Subtyping of Escherichia coli O157:H7 Strains Isolated from Human Infections and Healthy Cattle in Argentina
Del Castillo, Lourdes; D’Astek, Beatriz A.; Miliwebsky, Elizabeth; Carbonari, Claudia Carolina; Palladino, Pablo Martin; Deza, Natalia; Chinen, Isabel; Manfredi, Eduardo; Leotta, Gerardo A.; Masana, Marcelo Oscar; Rivas, Marta (Mary Ann Liebert, Inc., 2012-05-02)Shiga toxin–producing Escherichia coli (STEC) cause nonbloody (NBD) and bloody diarrhea (BD), and hemolytic uremic syndrome (HUS). Cattle have been described as their main reservoir. STEC O157:H7 is recognized as the ... -
Whole-Genome Sequencing Applied to the Molecular Epidemiology of Shiga Toxin-Producing Escherichia coli O157:H7 in Argentina
Masana, Marcelo Oscar; Carbonari, Claudia Carolina; Fittipaldi, Nahuel; Teatero, Sarah; Athey, Taryn B.T.; Pianciola, Luis; Melano, Roberto G.; Rivas, Marta; Chinen, Isabel (American Society for Microbiology, 2016-10-07)Shiga toxin-producing Escherichia coli strains are worldwide associated with sporadic human infections and outbreaks. In this work, we report the availability of high-quality draft whole-genome sequences for 19 O157:H7 ...