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Efficiency of different air filter types for pig facilities at laboratory scale
Air filtration has been shown to be efficient in reducing pathogen burden in circulating air. We determined at laboratory scale the retention efficiency of different air filter types either composed of a prefilter (EU class G4) and a secondary fiberglass filter (EU class F9) or consisting of a filte...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5640248/ https://www.ncbi.nlm.nih.gov/pubmed/29028843 http://dx.doi.org/10.1371/journal.pone.0186558 |
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author | Wenke, Cindy Pospiech, Janina Reutter, Tobias Truyen, Uwe Speck, Stephanie |
author_facet | Wenke, Cindy Pospiech, Janina Reutter, Tobias Truyen, Uwe Speck, Stephanie |
author_sort | Wenke, Cindy |
collection | PubMed |
description | Air filtration has been shown to be efficient in reducing pathogen burden in circulating air. We determined at laboratory scale the retention efficiency of different air filter types either composed of a prefilter (EU class G4) and a secondary fiberglass filter (EU class F9) or consisting of a filter mat (EU class M6 and F8-9). Four filter prototypes were tested for their capability to remove aerosol containing equine arteritis virus (EAV), porcine reproductive and respiratory syndrome virus (PRRSV), bovine enterovirus 1 (BEV), Actinobacillus pleuropneumoniae (APP), and Staphylococcus (S.) aureus from air. Depending on the filter prototype and utilisation, the airflow was set at 1,800 m(3)/h (combination of upstream prefilter and fiberglass filter) or 80 m(3)/h (filter mat). The pathogens were aerosolized and their concentration was determined in front of and behind the filter by culture or quantitative real-time RT-PCR. Furthermore, survival of the pathogens over time in the filter material was determined. Bacteria were most efficiently filtered with a reduction rate of up to 99.9% depending on the filter used. An approximately 98% reduction was achieved for the viruses tested. Viability or infectivity of APP or PRRSV in the filter material decreased below the detection limit after 4 h and 24 h, respectively, whereas S. aureus was still culturable after 4 weeks. Our results demonstrate that pathogens can efficiently be reduced by air filtration. Consequently, air filtration combined with other strict biosecurity measures markedly reduces the risk of introducing airborne transmitted pathogens to animal facilities. In addition, air filtration might be useful in reducing bioaerosols within a pig barn, hence improving respiratory health of pigs. |
format | Online Article Text |
id | pubmed-5640248 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-56402482017-10-30 Efficiency of different air filter types for pig facilities at laboratory scale Wenke, Cindy Pospiech, Janina Reutter, Tobias Truyen, Uwe Speck, Stephanie PLoS One Research Article Air filtration has been shown to be efficient in reducing pathogen burden in circulating air. We determined at laboratory scale the retention efficiency of different air filter types either composed of a prefilter (EU class G4) and a secondary fiberglass filter (EU class F9) or consisting of a filter mat (EU class M6 and F8-9). Four filter prototypes were tested for their capability to remove aerosol containing equine arteritis virus (EAV), porcine reproductive and respiratory syndrome virus (PRRSV), bovine enterovirus 1 (BEV), Actinobacillus pleuropneumoniae (APP), and Staphylococcus (S.) aureus from air. Depending on the filter prototype and utilisation, the airflow was set at 1,800 m(3)/h (combination of upstream prefilter and fiberglass filter) or 80 m(3)/h (filter mat). The pathogens were aerosolized and their concentration was determined in front of and behind the filter by culture or quantitative real-time RT-PCR. Furthermore, survival of the pathogens over time in the filter material was determined. Bacteria were most efficiently filtered with a reduction rate of up to 99.9% depending on the filter used. An approximately 98% reduction was achieved for the viruses tested. Viability or infectivity of APP or PRRSV in the filter material decreased below the detection limit after 4 h and 24 h, respectively, whereas S. aureus was still culturable after 4 weeks. Our results demonstrate that pathogens can efficiently be reduced by air filtration. Consequently, air filtration combined with other strict biosecurity measures markedly reduces the risk of introducing airborne transmitted pathogens to animal facilities. In addition, air filtration might be useful in reducing bioaerosols within a pig barn, hence improving respiratory health of pigs. Public Library of Science 2017-10-13 /pmc/articles/PMC5640248/ /pubmed/29028843 http://dx.doi.org/10.1371/journal.pone.0186558 Text en © 2017 Wenke et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Wenke, Cindy Pospiech, Janina Reutter, Tobias Truyen, Uwe Speck, Stephanie Efficiency of different air filter types for pig facilities at laboratory scale |
title | Efficiency of different air filter types for pig facilities at laboratory scale |
title_full | Efficiency of different air filter types for pig facilities at laboratory scale |
title_fullStr | Efficiency of different air filter types for pig facilities at laboratory scale |
title_full_unstemmed | Efficiency of different air filter types for pig facilities at laboratory scale |
title_short | Efficiency of different air filter types for pig facilities at laboratory scale |
title_sort | efficiency of different air filter types for pig facilities at laboratory scale |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5640248/ https://www.ncbi.nlm.nih.gov/pubmed/29028843 http://dx.doi.org/10.1371/journal.pone.0186558 |
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