A one-year longitudinal study of enterohemorrhagic Escherichia coli O157 fecal shedding in a beef cattle herd

Autores
Rhades, Luis; Larzabal, Mariano; Bentancor, Adriana; Sabio Y Garcia, Julia Veronica; Babinec, Francisco Jose; Cataldi, Angel Adrian; Amigo, Natalia; Baldone, Valeria Natalia; Urquiza, Lucas Federico; Delicia, Pablo Javier; Fort, Marcelo Cristian
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Bovines are the primary reservoir of enterohemorrhagic Escherichia coli (EHEC) O157:H7 and the main source of its transmission to humans. Here, we present a one-year longitudinal study of fecal shedding of E. coli O157. E. coli O157 obtained from recto-anal mucosal samples were characterized by multiplex PCR. The E. coli O157 prevalence ranged from 0.84% in July to 15.25% in November. The confinement within pens resulted in prevalence of 11%. Most animals (61.86%; 75/118) shed E. coli O157 at least in one sampling occasion. Of the positive animals, 82.19%, 16.44%, and 1.37% were stx positive on one, two and three sampling occasions, respectively. All the E. coli O157 isolated strains carried the genes eae and rfbO157, whereas 11%, 33% and 56% contained stx1, stx2 and stx1/stx2, respectively. The stx1/stx2 and stx2 types were significantly higher during the grazing and finishing periods, respectively, in comparison with the rearing and grazing periods. The presence of stx2a subtype was evident in four isolates, whereas stx2c was present in at least seven. However, both subtypes were present simultaneously in two isolates. The stx1/stx2c, stx1/stx2d and stx1/stx2NT genotypes occurred in 24, 2 and 15 isolates, respectively. The simultaneous occurrence of stx1 and stx2c significantly increased during grazing. Some cases of within-pen and between-pen transmission occurred throughout the study. Contagion levels during in-field grazing were higher than during permanent confinement in the pens. Thus, the individual patterns of shedding varied depending on the proportion of animals shedding the bacteria within pens and the time of shedding.
Estación Experimental Agropecuaria Anguil
Fil: Rhades, Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina
Fil: Bentancor, Adriana. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; Argentina
Fil: Larzabal, Mariano.Instituto Nacional de Tecnología Agropecuaria (INTA). UEDD IABIMO. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Sabio Y Garcia, Julia Verónica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Babinec, Francisco.Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina
Fil: Cataldi, Angel Adrian. Instituto Nacional de Tecnología Agropecuaria (INTA). UEDD IABIMO. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Amigo, Natalia. Instituto Nacional de Tecnología Agropecuaria (INTA). UEDD IABIMO. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Baldone, Valeria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina
Fil: Urquiza, Lucas. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina
Fil: Delicia, Pablo Javier. Universidad Tecnológica Nacional. Facultad Regional Rosario; Argentina
Fil: Fort, Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina
Fuente
Research in Veterinary Science 127 : 27-32 (December 2019)
Materia
Escherichia coli
Vacas de cría
Virulencia
Genética
Suckler Cows
Genetics
Beef Cattle
Virulence
Ganado de Carne
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/6345
Acceder
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oai_identifier_str oai:localhost:20.500.12123/6345
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling A one-year longitudinal study of enterohemorrhagic Escherichia coli O157 fecal shedding in a beef cattle herdRhades, LuisLarzabal, MarianoBentancor, AdrianaSabio Y Garcia, Julia VeronicaBabinec, Francisco JoseCataldi, Angel AdrianAmigo, NataliaBaldone, Valeria NataliaUrquiza, Lucas FedericoDelicia, Pablo JavierFort, Marcelo CristianEscherichia coliVacas de críaVirulenciaGenéticaSuckler CowsGeneticsBeef CattleVirulenceGanado de CarneBovines are the primary reservoir of enterohemorrhagic Escherichia coli (EHEC) O157:H7 and the main source of its transmission to humans. Here, we present a one-year longitudinal study of fecal shedding of E. coli O157. E. coli O157 obtained from recto-anal mucosal samples were characterized by multiplex PCR. The E. coli O157 prevalence ranged from 0.84% in July to 15.25% in November. The confinement within pens resulted in prevalence of 11%. Most animals (61.86%; 75/118) shed E. coli O157 at least in one sampling occasion. Of the positive animals, 82.19%, 16.44%, and 1.37% were stx positive on one, two and three sampling occasions, respectively. All the E. coli O157 isolated strains carried the genes eae and rfbO157, whereas 11%, 33% and 56% contained stx1, stx2 and stx1/stx2, respectively. The stx1/stx2 and stx2 types were significantly higher during the grazing and finishing periods, respectively, in comparison with the rearing and grazing periods. The presence of stx2a subtype was evident in four isolates, whereas stx2c was present in at least seven. However, both subtypes were present simultaneously in two isolates. The stx1/stx2c, stx1/stx2d and stx1/stx2NT genotypes occurred in 24, 2 and 15 isolates, respectively. The simultaneous occurrence of stx1 and stx2c significantly increased during grazing. Some cases of within-pen and between-pen transmission occurred throughout the study. Contagion levels during in-field grazing were higher than during permanent confinement in the pens. Thus, the individual patterns of shedding varied depending on the proportion of animals shedding the bacteria within pens and the time of shedding.Estación Experimental Agropecuaria AnguilFil: Rhades, Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; ArgentinaFil: Bentancor, Adriana. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; ArgentinaFil: Larzabal, Mariano.Instituto Nacional de Tecnología Agropecuaria (INTA). UEDD IABIMO. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sabio Y Garcia, Julia Verónica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Babinec, Francisco.Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; ArgentinaFil: Cataldi, Angel Adrian. Instituto Nacional de Tecnología Agropecuaria (INTA). UEDD IABIMO. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Amigo, Natalia. Instituto Nacional de Tecnología Agropecuaria (INTA). UEDD IABIMO. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Baldone, Valeria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; ArgentinaFil: Urquiza, Lucas. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; ArgentinaFil: Delicia, Pablo Javier. Universidad Tecnológica Nacional. Facultad Regional Rosario; ArgentinaFil: Fort, Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; ArgentinaElsevier2019-11-20T13:37:50Z2019-11-20T13:37:50Z2019-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/6345https://www.sciencedirect.com/science/article/pii/S00345288193039590034-5288https://doi.org/10.1016/j.rvsc.2019.10.001Research in Veterinary Science 127 : 27-32 (December 2019)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-29T13:44:49Zoai:localhost:20.500.12123/6345instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:44:50.018INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv A one-year longitudinal study of enterohemorrhagic Escherichia coli O157 fecal shedding in a beef cattle herd
title A one-year longitudinal study of enterohemorrhagic Escherichia coli O157 fecal shedding in a beef cattle herd
spellingShingle A one-year longitudinal study of enterohemorrhagic Escherichia coli O157 fecal shedding in a beef cattle herd
Rhades, Luis
Escherichia coli
Vacas de cría
Virulencia
Genética
Suckler Cows
Genetics
Beef Cattle
Virulence
Ganado de Carne
title_short A one-year longitudinal study of enterohemorrhagic Escherichia coli O157 fecal shedding in a beef cattle herd
title_full A one-year longitudinal study of enterohemorrhagic Escherichia coli O157 fecal shedding in a beef cattle herd
title_fullStr A one-year longitudinal study of enterohemorrhagic Escherichia coli O157 fecal shedding in a beef cattle herd
title_full_unstemmed A one-year longitudinal study of enterohemorrhagic Escherichia coli O157 fecal shedding in a beef cattle herd
title_sort A one-year longitudinal study of enterohemorrhagic Escherichia coli O157 fecal shedding in a beef cattle herd
dc.creator.none.fl_str_mv Rhades, Luis
Larzabal, Mariano
Bentancor, Adriana
Sabio Y Garcia, Julia Veronica
Babinec, Francisco Jose
Cataldi, Angel Adrian
Amigo, Natalia
Baldone, Valeria Natalia
Urquiza, Lucas Federico
Delicia, Pablo Javier
Fort, Marcelo Cristian
author Rhades, Luis
author_facet Rhades, Luis
Larzabal, Mariano
Bentancor, Adriana
Sabio Y Garcia, Julia Veronica
Babinec, Francisco Jose
Cataldi, Angel Adrian
Amigo, Natalia
Baldone, Valeria Natalia
Urquiza, Lucas Federico
Delicia, Pablo Javier
Fort, Marcelo Cristian
author_role author
author2 Larzabal, Mariano
Bentancor, Adriana
Sabio Y Garcia, Julia Veronica
Babinec, Francisco Jose
Cataldi, Angel Adrian
Amigo, Natalia
Baldone, Valeria Natalia
Urquiza, Lucas Federico
Delicia, Pablo Javier
Fort, Marcelo Cristian
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Escherichia coli
Vacas de cría
Virulencia
Genética
Suckler Cows
Genetics
Beef Cattle
Virulence
Ganado de Carne
topic Escherichia coli
Vacas de cría
Virulencia
Genética
Suckler Cows
Genetics
Beef Cattle
Virulence
Ganado de Carne
dc.description.none.fl_txt_mv Bovines are the primary reservoir of enterohemorrhagic Escherichia coli (EHEC) O157:H7 and the main source of its transmission to humans. Here, we present a one-year longitudinal study of fecal shedding of E. coli O157. E. coli O157 obtained from recto-anal mucosal samples were characterized by multiplex PCR. The E. coli O157 prevalence ranged from 0.84% in July to 15.25% in November. The confinement within pens resulted in prevalence of 11%. Most animals (61.86%; 75/118) shed E. coli O157 at least in one sampling occasion. Of the positive animals, 82.19%, 16.44%, and 1.37% were stx positive on one, two and three sampling occasions, respectively. All the E. coli O157 isolated strains carried the genes eae and rfbO157, whereas 11%, 33% and 56% contained stx1, stx2 and stx1/stx2, respectively. The stx1/stx2 and stx2 types were significantly higher during the grazing and finishing periods, respectively, in comparison with the rearing and grazing periods. The presence of stx2a subtype was evident in four isolates, whereas stx2c was present in at least seven. However, both subtypes were present simultaneously in two isolates. The stx1/stx2c, stx1/stx2d and stx1/stx2NT genotypes occurred in 24, 2 and 15 isolates, respectively. The simultaneous occurrence of stx1 and stx2c significantly increased during grazing. Some cases of within-pen and between-pen transmission occurred throughout the study. Contagion levels during in-field grazing were higher than during permanent confinement in the pens. Thus, the individual patterns of shedding varied depending on the proportion of animals shedding the bacteria within pens and the time of shedding.
Estación Experimental Agropecuaria Anguil
Fil: Rhades, Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina
Fil: Bentancor, Adriana. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias; Argentina
Fil: Larzabal, Mariano.Instituto Nacional de Tecnología Agropecuaria (INTA). UEDD IABIMO. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Sabio Y Garcia, Julia Verónica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Babinec, Francisco.Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina
Fil: Cataldi, Angel Adrian. Instituto Nacional de Tecnología Agropecuaria (INTA). UEDD IABIMO. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Amigo, Natalia. Instituto Nacional de Tecnología Agropecuaria (INTA). UEDD IABIMO. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Baldone, Valeria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina
Fil: Urquiza, Lucas. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina
Fil: Delicia, Pablo Javier. Universidad Tecnológica Nacional. Facultad Regional Rosario; Argentina
Fil: Fort, Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina
description Bovines are the primary reservoir of enterohemorrhagic Escherichia coli (EHEC) O157:H7 and the main source of its transmission to humans. Here, we present a one-year longitudinal study of fecal shedding of E. coli O157. E. coli O157 obtained from recto-anal mucosal samples were characterized by multiplex PCR. The E. coli O157 prevalence ranged from 0.84% in July to 15.25% in November. The confinement within pens resulted in prevalence of 11%. Most animals (61.86%; 75/118) shed E. coli O157 at least in one sampling occasion. Of the positive animals, 82.19%, 16.44%, and 1.37% were stx positive on one, two and three sampling occasions, respectively. All the E. coli O157 isolated strains carried the genes eae and rfbO157, whereas 11%, 33% and 56% contained stx1, stx2 and stx1/stx2, respectively. The stx1/stx2 and stx2 types were significantly higher during the grazing and finishing periods, respectively, in comparison with the rearing and grazing periods. The presence of stx2a subtype was evident in four isolates, whereas stx2c was present in at least seven. However, both subtypes were present simultaneously in two isolates. The stx1/stx2c, stx1/stx2d and stx1/stx2NT genotypes occurred in 24, 2 and 15 isolates, respectively. The simultaneous occurrence of stx1 and stx2c significantly increased during grazing. Some cases of within-pen and between-pen transmission occurred throughout the study. Contagion levels during in-field grazing were higher than during permanent confinement in the pens. Thus, the individual patterns of shedding varied depending on the proportion of animals shedding the bacteria within pens and the time of shedding.
publishDate 2019
dc.date.none.fl_str_mv 2019-11-20T13:37:50Z
2019-11-20T13:37:50Z
2019-12-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/6345
https://www.sciencedirect.com/science/article/pii/S0034528819303959
0034-5288
https://doi.org/10.1016/j.rvsc.2019.10.001
url http://hdl.handle.net/20.500.12123/6345
https://www.sciencedirect.com/science/article/pii/S0034528819303959
https://doi.org/10.1016/j.rvsc.2019.10.001
identifier_str_mv 0034-5288
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Research in Veterinary Science 127 : 27-32 (December 2019)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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