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Syndromic surveillance of abortions in beef cattle based on the prospective analysis of spatio-temporal variations of calvings

Our objective was to study the ability of a syndromic surveillance system to identify spatio-temporal clusters of drops in the number of calvings among beef cows during the Bluetongue epizootic of 2007 and 2008, based on calving seasons. France was partitioned into 300 iso-populated units, i.e. unit...

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Autores principales: Bronner, A., Morignat, E., Fournié, G., Vergne, T., Vinard, J-L, Gay, E., Calavas, D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4685302/
https://www.ncbi.nlm.nih.gov/pubmed/26687099
http://dx.doi.org/10.1038/srep18285
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author Bronner, A.
Morignat, E.
Fournié, G.
Vergne, T.
Vinard, J-L
Gay, E.
Calavas, D.
author_facet Bronner, A.
Morignat, E.
Fournié, G.
Vergne, T.
Vinard, J-L
Gay, E.
Calavas, D.
author_sort Bronner, A.
collection PubMed
description Our objective was to study the ability of a syndromic surveillance system to identify spatio-temporal clusters of drops in the number of calvings among beef cows during the Bluetongue epizootic of 2007 and 2008, based on calving seasons. France was partitioned into 300 iso-populated units, i.e. units with quite the same number of beef cattle. Only 1% of clusters were unlikely to be related to Bluetongue. Clusters were detected during the calving season of primary infection by Bluetongue in 28% (n = 23) of the units first infected in 2007, and in 87% (n = 184) of the units first infected in 2008. In units in which a first cluster was detected over their calving season of primary infection, Bluetongue was detected more rapidly after the start of the calving season and its prevalence was higher than in other units. We believe that this type of syndromic surveillance system could improve the surveillance of abortive events in French cattle. Besides, our approach should be used to develop syndromic surveillance systems for other diseases and purposes, and in other settings, to avoid “false” alarms due to isolated events and homogenize the ability to detect abnormal variations of indicator amongst iso-populated units.
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spelling pubmed-46853022015-12-30 Syndromic surveillance of abortions in beef cattle based on the prospective analysis of spatio-temporal variations of calvings Bronner, A. Morignat, E. Fournié, G. Vergne, T. Vinard, J-L Gay, E. Calavas, D. Sci Rep Article Our objective was to study the ability of a syndromic surveillance system to identify spatio-temporal clusters of drops in the number of calvings among beef cows during the Bluetongue epizootic of 2007 and 2008, based on calving seasons. France was partitioned into 300 iso-populated units, i.e. units with quite the same number of beef cattle. Only 1% of clusters were unlikely to be related to Bluetongue. Clusters were detected during the calving season of primary infection by Bluetongue in 28% (n = 23) of the units first infected in 2007, and in 87% (n = 184) of the units first infected in 2008. In units in which a first cluster was detected over their calving season of primary infection, Bluetongue was detected more rapidly after the start of the calving season and its prevalence was higher than in other units. We believe that this type of syndromic surveillance system could improve the surveillance of abortive events in French cattle. Besides, our approach should be used to develop syndromic surveillance systems for other diseases and purposes, and in other settings, to avoid “false” alarms due to isolated events and homogenize the ability to detect abnormal variations of indicator amongst iso-populated units. Nature Publishing Group 2015-12-21 /pmc/articles/PMC4685302/ /pubmed/26687099 http://dx.doi.org/10.1038/srep18285 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Bronner, A.
Morignat, E.
Fournié, G.
Vergne, T.
Vinard, J-L
Gay, E.
Calavas, D.
Syndromic surveillance of abortions in beef cattle based on the prospective analysis of spatio-temporal variations of calvings
title Syndromic surveillance of abortions in beef cattle based on the prospective analysis of spatio-temporal variations of calvings
title_full Syndromic surveillance of abortions in beef cattle based on the prospective analysis of spatio-temporal variations of calvings
title_fullStr Syndromic surveillance of abortions in beef cattle based on the prospective analysis of spatio-temporal variations of calvings
title_full_unstemmed Syndromic surveillance of abortions in beef cattle based on the prospective analysis of spatio-temporal variations of calvings
title_short Syndromic surveillance of abortions in beef cattle based on the prospective analysis of spatio-temporal variations of calvings
title_sort syndromic surveillance of abortions in beef cattle based on the prospective analysis of spatio-temporal variations of calvings
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4685302/
https://www.ncbi.nlm.nih.gov/pubmed/26687099
http://dx.doi.org/10.1038/srep18285
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