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Analysis of Estonian surveillance in wild boar suggests a decline in the incidence of African swine fever

African swine fever (ASF) in wild boar populations is difficult to control. In affected areas, samples from all wild boar shot and found dead are investigated. The use of laboratory tests allows estimating the duration of the infection in affected animals. The study aimed to test the hypothesis that...

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Autores principales: Schulz, Katja, Staubach, Christoph, Blome, Sandra, Viltrop, Arvo, Nurmoja, Imbi, Conraths, Franz Josef, Sauter-Louis, Carola
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560063/
https://www.ncbi.nlm.nih.gov/pubmed/31186505
http://dx.doi.org/10.1038/s41598-019-44890-0
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author Schulz, Katja
Staubach, Christoph
Blome, Sandra
Viltrop, Arvo
Nurmoja, Imbi
Conraths, Franz Josef
Sauter-Louis, Carola
author_facet Schulz, Katja
Staubach, Christoph
Blome, Sandra
Viltrop, Arvo
Nurmoja, Imbi
Conraths, Franz Josef
Sauter-Louis, Carola
author_sort Schulz, Katja
collection PubMed
description African swine fever (ASF) in wild boar populations is difficult to control. In affected areas, samples from all wild boar shot and found dead are investigated. The use of laboratory tests allows estimating the duration of the infection in affected animals. The study aimed to test the hypothesis that the stage of the epidemic in different areas of Estonia can be assessed on the basis of prevalence estimates. ASF surveillance data of Estonian wild boar were used to estimate prevalences and compare them between the East and West of Estonia. The temporal trend of the estimated prevalence of ASF virus positive animals and of the estimated seroprevalence of wild boar showing antibodies against ASFV was analyzed. Due to the potential influence of population density on the course of ASF in wild boar, also population density data (number of wild boar/km(2)) were used to investigate the relationship with laboratory test results. In areas, where the epidemic had already lasted for a long time, a small number of new cases emerged recently. The prevalence of samples that were only seropositive was significantly higher in these regions as compared to areas, where the epidemic is in full progress. The observed course of the disease could be the beginning of an ASF endemicity in this region. However, the results may also indicate that ASF has started to subside in the areas that were first affected in Estonia.
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spelling pubmed-65600632019-06-19 Analysis of Estonian surveillance in wild boar suggests a decline in the incidence of African swine fever Schulz, Katja Staubach, Christoph Blome, Sandra Viltrop, Arvo Nurmoja, Imbi Conraths, Franz Josef Sauter-Louis, Carola Sci Rep Article African swine fever (ASF) in wild boar populations is difficult to control. In affected areas, samples from all wild boar shot and found dead are investigated. The use of laboratory tests allows estimating the duration of the infection in affected animals. The study aimed to test the hypothesis that the stage of the epidemic in different areas of Estonia can be assessed on the basis of prevalence estimates. ASF surveillance data of Estonian wild boar were used to estimate prevalences and compare them between the East and West of Estonia. The temporal trend of the estimated prevalence of ASF virus positive animals and of the estimated seroprevalence of wild boar showing antibodies against ASFV was analyzed. Due to the potential influence of population density on the course of ASF in wild boar, also population density data (number of wild boar/km(2)) were used to investigate the relationship with laboratory test results. In areas, where the epidemic had already lasted for a long time, a small number of new cases emerged recently. The prevalence of samples that were only seropositive was significantly higher in these regions as compared to areas, where the epidemic is in full progress. The observed course of the disease could be the beginning of an ASF endemicity in this region. However, the results may also indicate that ASF has started to subside in the areas that were first affected in Estonia. Nature Publishing Group UK 2019-06-11 /pmc/articles/PMC6560063/ /pubmed/31186505 http://dx.doi.org/10.1038/s41598-019-44890-0 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Schulz, Katja
Staubach, Christoph
Blome, Sandra
Viltrop, Arvo
Nurmoja, Imbi
Conraths, Franz Josef
Sauter-Louis, Carola
Analysis of Estonian surveillance in wild boar suggests a decline in the incidence of African swine fever
title Analysis of Estonian surveillance in wild boar suggests a decline in the incidence of African swine fever
title_full Analysis of Estonian surveillance in wild boar suggests a decline in the incidence of African swine fever
title_fullStr Analysis of Estonian surveillance in wild boar suggests a decline in the incidence of African swine fever
title_full_unstemmed Analysis of Estonian surveillance in wild boar suggests a decline in the incidence of African swine fever
title_short Analysis of Estonian surveillance in wild boar suggests a decline in the incidence of African swine fever
title_sort analysis of estonian surveillance in wild boar suggests a decline in the incidence of african swine fever
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560063/
https://www.ncbi.nlm.nih.gov/pubmed/31186505
http://dx.doi.org/10.1038/s41598-019-44890-0
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