Efficacy of Liming Forest Soil in the Context of African Swine Fever Virus

Since September 2020, Germany has experienced the first ever outbreak of African swine fever (ASF). The first known cases occurred exclusively in wild boar in forest areas in Brandenburg and Saxony; in July 2021, infected domestic pigs were also confirmed for the first time. As wild boar are conside...

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Main Authors: Franziska Tanneberger, Ahmed Abd El Wahed, Melina Fischer, Paul Deutschmann, Hanna Roszyk, Tessa Carrau, Sandra Blome, Uwe Truyen
Format: Article
Language:English
Published: MDPI AG 2022-03-01
Series:Viruses
Subjects:
Online Access:https://www.mdpi.com/1999-4915/14/4/734
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author Franziska Tanneberger
Ahmed Abd El Wahed
Melina Fischer
Paul Deutschmann
Hanna Roszyk
Tessa Carrau
Sandra Blome
Uwe Truyen
author_facet Franziska Tanneberger
Ahmed Abd El Wahed
Melina Fischer
Paul Deutschmann
Hanna Roszyk
Tessa Carrau
Sandra Blome
Uwe Truyen
author_sort Franziska Tanneberger
collection DOAJ
description Since September 2020, Germany has experienced the first ever outbreak of African swine fever (ASF). The first known cases occurred exclusively in wild boar in forest areas in Brandenburg and Saxony; in July 2021, infected domestic pigs were also confirmed for the first time. As wild boar are considered the main reservoir for the virus in the European region, an effective interruption of this infection chain is essential. In particular, the removal and safe disposal of infected carcasses and the direct disinfection of contaminated, unpaved ground are priorities in this regard. For the disinfection, highly potent as well as environmentally compatible disinfectants must be used, which are neither influenced in their effectiveness by the soil condition nor by increased organic contamination. Thus, in this study, slaked lime, milk of lime and quicklime (1% to 10% solutions) were selected for efficacy testing against the test virus recommended by the German Veterinary Society (DVG), Modified Vaccinia Ankara virus (MVAV), and ASF virus (ASFV) in conjunction with six different forest soils from Saxony in two different soil layers (top soil and mineral soil) each. In summary, 10% of any tested lime type is able to inactivate both MVAV and ASFV under conditions of high organic load and independent of the water content of the soil. At least a 4 log reduction of the virus titer in all tested forest soil types and layers and by all applied lime types was observed. In conclusion, the high efficacy and suitability of all tested lime products against both viruses and in the presence of high organic load in forest soil can be confirmed and will help to control ASF spread.
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spelling doaj.art-939d7acd8f5e4c73bb9f78d56f9a7d8c2023-12-03T14:03:19ZengMDPI AGViruses1999-49152022-03-0114473410.3390/v14040734Efficacy of Liming Forest Soil in the Context of African Swine Fever VirusFranziska Tanneberger0Ahmed Abd El Wahed1Melina Fischer2Paul Deutschmann3Hanna Roszyk4Tessa Carrau5Sandra Blome6Uwe Truyen7Institute of Animal Hygiene and Veterinary Public Health, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 1, 04103 Leipzig, GermanyInstitute of Animal Hygiene and Veterinary Public Health, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 1, 04103 Leipzig, GermanyInstitute of Diagnostic Virology, Friedrich-Loeffler-Institut, Suedufer 10, Insel Riems, 17493 Greifswald, GermanyInstitute of Diagnostic Virology, Friedrich-Loeffler-Institut, Suedufer 10, Insel Riems, 17493 Greifswald, GermanyInstitute of Diagnostic Virology, Friedrich-Loeffler-Institut, Suedufer 10, Insel Riems, 17493 Greifswald, GermanyInstitute of Diagnostic Virology, Friedrich-Loeffler-Institut, Suedufer 10, Insel Riems, 17493 Greifswald, GermanyInstitute of Diagnostic Virology, Friedrich-Loeffler-Institut, Suedufer 10, Insel Riems, 17493 Greifswald, GermanyInstitute of Animal Hygiene and Veterinary Public Health, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 1, 04103 Leipzig, GermanySince September 2020, Germany has experienced the first ever outbreak of African swine fever (ASF). The first known cases occurred exclusively in wild boar in forest areas in Brandenburg and Saxony; in July 2021, infected domestic pigs were also confirmed for the first time. As wild boar are considered the main reservoir for the virus in the European region, an effective interruption of this infection chain is essential. In particular, the removal and safe disposal of infected carcasses and the direct disinfection of contaminated, unpaved ground are priorities in this regard. For the disinfection, highly potent as well as environmentally compatible disinfectants must be used, which are neither influenced in their effectiveness by the soil condition nor by increased organic contamination. Thus, in this study, slaked lime, milk of lime and quicklime (1% to 10% solutions) were selected for efficacy testing against the test virus recommended by the German Veterinary Society (DVG), Modified Vaccinia Ankara virus (MVAV), and ASF virus (ASFV) in conjunction with six different forest soils from Saxony in two different soil layers (top soil and mineral soil) each. In summary, 10% of any tested lime type is able to inactivate both MVAV and ASFV under conditions of high organic load and independent of the water content of the soil. At least a 4 log reduction of the virus titer in all tested forest soil types and layers and by all applied lime types was observed. In conclusion, the high efficacy and suitability of all tested lime products against both viruses and in the presence of high organic load in forest soil can be confirmed and will help to control ASF spread.https://www.mdpi.com/1999-4915/14/4/734African swine fever virusModified Vaccinia Ankara virussoildisinfectantlime
spellingShingle Franziska Tanneberger
Ahmed Abd El Wahed
Melina Fischer
Paul Deutschmann
Hanna Roszyk
Tessa Carrau
Sandra Blome
Uwe Truyen
Efficacy of Liming Forest Soil in the Context of African Swine Fever Virus
Viruses
African swine fever virus
Modified Vaccinia Ankara virus
soil
disinfectant
lime
title Efficacy of Liming Forest Soil in the Context of African Swine Fever Virus
title_full Efficacy of Liming Forest Soil in the Context of African Swine Fever Virus
title_fullStr Efficacy of Liming Forest Soil in the Context of African Swine Fever Virus
title_full_unstemmed Efficacy of Liming Forest Soil in the Context of African Swine Fever Virus
title_short Efficacy of Liming Forest Soil in the Context of African Swine Fever Virus
title_sort efficacy of liming forest soil in the context of african swine fever virus
topic African swine fever virus
Modified Vaccinia Ankara virus
soil
disinfectant
lime
url https://www.mdpi.com/1999-4915/14/4/734
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