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Smith RP, May HE, Burow E, Meester M, Tobias TJ, Sassu EL, Pavoni E, Di Bartolo I, Prigge C, Wasyl D, Zmudzki J, Viltrop A, Nurmoja I, Zoche-Golob V, Alborali GL, Romantini R, Dors A, Krumova-Valcheva G, Koláčková I, Aprea G, Daskalov H. Assessing pig farm biosecurity measures for the control of Salmonella on European farms. Epidemiol Infect 2023; 151:e130. [PMID: 37439254 PMCID: PMC10540172 DOI: 10.1017/s0950268823001115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 05/11/2023] [Accepted: 07/04/2023] [Indexed: 07/14/2023] Open
Abstract
Salmonella spp. is a common zoonotic pathogen, causing gastrointestinal infections in people. Pigs and pig meat are a major source of infection. Although farm biosecurity is believed to be important for controlling Salmonella transmission, robust evidence is lacking on which measures are most effective. This study enrolled 250 pig farms across nine European countries. From each farm, 20 pooled faecal samples (or similar information) were collected and analysed for Salmonella presence. Based on the proportion of positive results, farms were categorised as at higher or lower Salmonella risk, and associations with variables from a comprehensive questionnaire investigated. Multivariable analysis indicated that farms were less likely to be in the higher-risk category if they had '<400 sows'; used rodent baits close to pig enclosures; isolated stay-behind (sick) pigs; did not answer that the hygiene lock/ anteroom was easy to clean; did not have a full perimeter fence; did apply downtime of at least 3 days between farrowing batches; and had fully slatted flooring in all fattener buildings. A principal components analysis assessed the sources of variation between farms, and correlation between variables. The study results suggest simple control measures that could be prioritised on European pig farms to control Salmonella.
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Affiliation(s)
- Richard P. Smith
- Department of Epidemiological Sciences, Animal and Plant Health Agency – Weybridge, Addlestone, UK
| | - Hannah E. May
- Department of Epidemiological Sciences, Animal and Plant Health Agency – Weybridge, Addlestone, UK
| | - Elke Burow
- Department of Biological Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany
- Ministry of Agriculture, Environment and Climate Protection (MLUK), Potsdam, Germany
| | - Marina Meester
- Department Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Tijs J. Tobias
- Department Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Elena-Lucia Sassu
- Division for Animal Health, Austrian Agency for Health and Food Safety (AGES), Mödling, Austria
| | - Enrico Pavoni
- Istituto Zooprofilattico Sperimentale della Lombardia e Dell’Emilia Romagna, Brescia, Italy
| | | | - Christopher Prigge
- Division for Animal Health, Austrian Agency for Health and Food Safety (AGES), Mödling, Austria
- University of Veterinary Medicine Vienna, Vienna, Austria
| | - Dariusz Wasyl
- National Veterinary Research Institute, Puławy, Poland
| | - Jacek Zmudzki
- National Veterinary Research Institute, Puławy, Poland
| | - Arvo Viltrop
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Tartu, Estonia
- National Centre for Laboratory Research and Risk Assessment, Tartu, Estonia
| | - Imbi Nurmoja
- National Centre for Laboratory Research and Risk Assessment, Tartu, Estonia
| | - Veit Zoche-Golob
- Ministry of Agriculture, Environment and Climate Protection (MLUK), Potsdam, Germany
| | - Giovanni L. Alborali
- Istituto Zooprofilattico Sperimentale della Lombardia e Dell’Emilia Romagna, Brescia, Italy
| | - Romina Romantini
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise Giuseppe Caporale, Teramo, Italy
| | - Arkadiusz Dors
- National Veterinary Research Institute, Puławy, Poland
- Department of Preclinical Sciences and Infectious Diseases, Faculty of Veterinary Medicine and Animal Sciences, University of Life Sciences, Poznan, Poland
| | | | - Ivana Koláčková
- Veterinary Research Institute, Brno, Czech Republic
- Department of Public Health, Masaryk University, Brno, Czech Republic
| | - Guiseppe Aprea
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise Giuseppe Caporale, Teramo, Italy
| | - Hristo Daskalov
- National Diagnostic and Research Veterinary Medicine Institute, Sofia, Bulgaria
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Sassu EL, Bossé JT, Tobias TJ, Gottschalk M, Langford PR, Hennig-Pauka I. Update on Actinobacillus pleuropneumoniae-knowledge, gaps and challenges. Transbound Emerg Dis 2017; 65 Suppl 1:72-90. [PMID: 29083117 DOI: 10.1111/tbed.12739] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Indexed: 12/15/2022]
Abstract
Porcine pleuropneumonia, caused by the bacterial porcine respiratory tract pathogen Actinobacillus pleuropneumoniae, leads to high economic losses in affected swine herds in most countries of the world. Pigs affected by peracute and acute disease suffer from severe respiratory distress with high lethality. The agent was first described in 1957 and, since then, knowledge about the pathogen itself, and its interactions with the host, has increased continuously. This is, in part, due to the fact that experimental infections can be studied in the natural host. However, the fact that most commercial pigs are colonized by this pathogen has hampered the applicability of knowledge gained under experimental conditions. In addition, several factors are involved in development of disease, and these have often been studied individually. In a DISCONTOOLS initiative, members from science, industry and clinics exchanged their expertise and empirical observations and identified the major gaps in knowledge. This review sums up published results and expert opinions, within the fields of pathogenesis, epidemiology, transmission, immune response to infection, as well as the main means of prevention, detection and control. The gaps that still remain to be filled are highlighted, and present as well as future challenges in the control of this disease are addressed.
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Affiliation(s)
- E L Sassu
- Department of Pathobiology, Institute of Immunology, University of Veterinary Medicine, Vienna, Austria
| | - J T Bossé
- Section of Paediatrics, Department of Medicine, Imperial College London, London, UK
| | - T J Tobias
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - M Gottschalk
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - P R Langford
- Section of Paediatrics, Department of Medicine, Imperial College London, London, UK
| | - I Hennig-Pauka
- Field Station for Epidemiology, University of Veterinary Medicine Hannover, Foundation, Bakum, Germany
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