African Swine Fever and Its Epidemiological Course in Lithuanian Wild Boar

African swine fever (ASF) has been present in Lithuania since 2014. It is mainly the wild boar population that is affected. Currently, little is known about the epidemiological course of ASF in Lithuania. In the present study, ASF surveillance data from 2016–2021 were analyzed. The numbers of sample...

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Main Authors: Katja Schulz, Marius Masiulis, Christoph Staubach, Alvydas Malakauskas, Gediminas Pridotkas, Franz J. Conraths, Carola Sauter-Louis
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Viruses
Subjects:
Online Access:https://www.mdpi.com/1999-4915/13/7/1276
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author Katja Schulz
Marius Masiulis
Christoph Staubach
Alvydas Malakauskas
Gediminas Pridotkas
Franz J. Conraths
Carola Sauter-Louis
author_facet Katja Schulz
Marius Masiulis
Christoph Staubach
Alvydas Malakauskas
Gediminas Pridotkas
Franz J. Conraths
Carola Sauter-Louis
author_sort Katja Schulz
collection DOAJ
description African swine fever (ASF) has been present in Lithuania since 2014. It is mainly the wild boar population that is affected. Currently, little is known about the epidemiological course of ASF in Lithuania. In the present study, ASF surveillance data from 2016–2021 were analyzed. The numbers of samples taken from hunted wild boar and wild boar found dead per year and month were recorded and the prevalence was estimated for each study month and administrative unit. A Bayesian space–time model was used to calculate the temporal trend of the prevalence estimates. In addition, population data were analyzed on a yearly basis. Most samples were investigated in 2016 and 2017 and originated from hunted animals. Prevalence estimates of ASF virus-positive wild boar decreased from May 2019 onwards. Seroprevalence estimates showed a slight decrease at the same time, but they increased again at the end of the study period. A significant decrease in the population density was observed over time. The results of the study show that ASF is still present in the Lithuanian wild boar population. A joint interdisciplinary effort is needed to identify weaknesses in the control of ASF in Lithuania and to combat the disease more successfully.
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spelling doaj.art-133cc2d8d18a4c54bbab12dc2897aade2023-12-03T13:18:10ZengMDPI AGViruses1999-49152021-06-01137127610.3390/v13071276African Swine Fever and Its Epidemiological Course in Lithuanian Wild BoarKatja Schulz0Marius Masiulis1Christoph Staubach2Alvydas Malakauskas3Gediminas Pridotkas4Franz J. Conraths5Carola Sauter-Louis6Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Epidemiology, Südufer 10, 17493 Greifswald-Insel Riems, GermanyEmergency Response Division, State Food and Veterinary Service, Siesiku 19, LT-07170 Vilnius, LithuaniaFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Epidemiology, Südufer 10, 17493 Greifswald-Insel Riems, GermanyEmergency Response Division, State Food and Veterinary Service, Siesiku 19, LT-07170 Vilnius, LithuaniaNational Food and Veterinary Risk Assessment Institute, J. Kairiūkščio Street 10, LT-08409 Vilnius, LithuaniaFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Epidemiology, Südufer 10, 17493 Greifswald-Insel Riems, GermanyFriedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Epidemiology, Südufer 10, 17493 Greifswald-Insel Riems, GermanyAfrican swine fever (ASF) has been present in Lithuania since 2014. It is mainly the wild boar population that is affected. Currently, little is known about the epidemiological course of ASF in Lithuania. In the present study, ASF surveillance data from 2016–2021 were analyzed. The numbers of samples taken from hunted wild boar and wild boar found dead per year and month were recorded and the prevalence was estimated for each study month and administrative unit. A Bayesian space–time model was used to calculate the temporal trend of the prevalence estimates. In addition, population data were analyzed on a yearly basis. Most samples were investigated in 2016 and 2017 and originated from hunted animals. Prevalence estimates of ASF virus-positive wild boar decreased from May 2019 onwards. Seroprevalence estimates showed a slight decrease at the same time, but they increased again at the end of the study period. A significant decrease in the population density was observed over time. The results of the study show that ASF is still present in the Lithuanian wild boar population. A joint interdisciplinary effort is needed to identify weaknesses in the control of ASF in Lithuania and to combat the disease more successfully.https://www.mdpi.com/1999-4915/13/7/1276disease controlsurveillanceepidemiological courseprevalencepopulation density
spellingShingle Katja Schulz
Marius Masiulis
Christoph Staubach
Alvydas Malakauskas
Gediminas Pridotkas
Franz J. Conraths
Carola Sauter-Louis
African Swine Fever and Its Epidemiological Course in Lithuanian Wild Boar
Viruses
disease control
surveillance
epidemiological course
prevalence
population density
title African Swine Fever and Its Epidemiological Course in Lithuanian Wild Boar
title_full African Swine Fever and Its Epidemiological Course in Lithuanian Wild Boar
title_fullStr African Swine Fever and Its Epidemiological Course in Lithuanian Wild Boar
title_full_unstemmed African Swine Fever and Its Epidemiological Course in Lithuanian Wild Boar
title_short African Swine Fever and Its Epidemiological Course in Lithuanian Wild Boar
title_sort african swine fever and its epidemiological course in lithuanian wild boar
topic disease control
surveillance
epidemiological course
prevalence
population density
url https://www.mdpi.com/1999-4915/13/7/1276
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