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Interaction of rotavirus and enterotoxigenic Escherichia coli in conventionally-reared dairy calves

A study was made of the effects of rotavirus and/or enterotoxigenic Escherichia coli (ETEC) on dairy calves born and suckled on the farm and subsequently reared in isolation. Calves were orally inoculated at 6 days old with either rotavirus (5), ETEC (7), rotavirus and ETEC (5) or remained uninocula...

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Detalles Bibliográficos
Autores principales: Snodgrass, D.R., Smith, Megan L., Krautil, Fiona L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Published by Elsevier B.V. 1982
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7117526/
https://www.ncbi.nlm.nih.gov/pubmed/6285586
http://dx.doi.org/10.1016/0378-1135(82)90005-0
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author Snodgrass, D.R.
Smith, Megan L.
Krautil, Fiona L.
author_facet Snodgrass, D.R.
Smith, Megan L.
Krautil, Fiona L.
author_sort Snodgrass, D.R.
collection PubMed
description A study was made of the effects of rotavirus and/or enterotoxigenic Escherichia coli (ETEC) on dairy calves born and suckled on the farm and subsequently reared in isolation. Calves were orally inoculated at 6 days old with either rotavirus (5), ETEC (7), rotavirus and ETEC (5) or remained uninoculated controls (4), and their reactions were recorded by clinical, microbiological, and pathological observations. Rotavirus infection consistently produced diarrhoea, while ETEC inoculated alone did not colonise the intestine. In dual infections, both rotavirus and ETEC multiplied, although the severity of diarrhoea was not greater than that caused by rotavirus alone. Some ETEC-inoculated calves developed subsequent naturally-acquired rotavirus infections, but in these no ETEC multiplication occurred. The results suggest that prior or simultaneous rotavirus infection is necessary to enable ETEC colonisation of the intestine in convenstional calves of this age.
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spelling pubmed-71175262020-04-02 Interaction of rotavirus and enterotoxigenic Escherichia coli in conventionally-reared dairy calves Snodgrass, D.R. Smith, Megan L. Krautil, Fiona L. Vet Microbiol Article A study was made of the effects of rotavirus and/or enterotoxigenic Escherichia coli (ETEC) on dairy calves born and suckled on the farm and subsequently reared in isolation. Calves were orally inoculated at 6 days old with either rotavirus (5), ETEC (7), rotavirus and ETEC (5) or remained uninoculated controls (4), and their reactions were recorded by clinical, microbiological, and pathological observations. Rotavirus infection consistently produced diarrhoea, while ETEC inoculated alone did not colonise the intestine. In dual infections, both rotavirus and ETEC multiplied, although the severity of diarrhoea was not greater than that caused by rotavirus alone. Some ETEC-inoculated calves developed subsequent naturally-acquired rotavirus infections, but in these no ETEC multiplication occurred. The results suggest that prior or simultaneous rotavirus infection is necessary to enable ETEC colonisation of the intestine in convenstional calves of this age. Published by Elsevier B.V. 1982-03 2002-11-12 /pmc/articles/PMC7117526/ /pubmed/6285586 http://dx.doi.org/10.1016/0378-1135(82)90005-0 Text en Copyright © 1982 Published by Elsevier B.V. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
spellingShingle Article
Snodgrass, D.R.
Smith, Megan L.
Krautil, Fiona L.
Interaction of rotavirus and enterotoxigenic Escherichia coli in conventionally-reared dairy calves
title Interaction of rotavirus and enterotoxigenic Escherichia coli in conventionally-reared dairy calves
title_full Interaction of rotavirus and enterotoxigenic Escherichia coli in conventionally-reared dairy calves
title_fullStr Interaction of rotavirus and enterotoxigenic Escherichia coli in conventionally-reared dairy calves
title_full_unstemmed Interaction of rotavirus and enterotoxigenic Escherichia coli in conventionally-reared dairy calves
title_short Interaction of rotavirus and enterotoxigenic Escherichia coli in conventionally-reared dairy calves
title_sort interaction of rotavirus and enterotoxigenic escherichia coli in conventionally-reared dairy calves
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7117526/
https://www.ncbi.nlm.nih.gov/pubmed/6285586
http://dx.doi.org/10.1016/0378-1135(82)90005-0
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