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Fredriksson-Ahomaa M, Grönthal T, Heljanko V, Johansson V, Rantala M, Heikinheimo A, Laukkanen-Ninios R. Enteropathogenic Yersinia with Public Health Relevance Found in Dogs and Cats in Finland. Pathogens 2024; 13:54. [PMID: 38251361 PMCID: PMC10820211 DOI: 10.3390/pathogens13010054] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/01/2024] [Accepted: 01/04/2024] [Indexed: 01/23/2024] Open
Abstract
Yersiniosis is a common zoonotic enteric disease among humans, which has been linked to pigs and contaminated food, especially pork. The epidemiology of yersiniosis is still obscure, and studies on yersiniosis in pets are very scarce. In this study, we performed pheno- and genotypic characterisation of 50 Yersinia strains isolated from pets in Finland between 2012 and 2023. Y. enterocolitica 4/O:3/ST135, the most common type in human yersiniosis, was also the most common type (68%) found in clinical faecal samples in our study. Also, human pathogenic Y. enterocolitica 2/O:9/ST139 and Y. pseudotuberculosis O:1/ST9 and O:1/ST42 strains carrying all essential pathogenic genes were identified. Three Y. enterocolitica 4/O:3/ST9 strains were multi-drug-resistant and two of them were highly related, showing one allelic difference (AD) with core genome multi-locus sequence typing. Non-pathogenic, genotypically highly diverse Y. enterocolitica 1A strains, showing more than 1000 ADs and missing the essential virulence genes, were also recognised in dogs and cats. Our study demonstrates that pets can excrete human pathogenic Yersinia in their faeces and may serve as an infection source for human yersiniosis, especially in families with small children in close contact with their pets.
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Affiliation(s)
- Maria Fredriksson-Ahomaa
- Department of Food Hygiene and Environmental Hygiene, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland; (V.H.); (V.J.); (A.H.); (R.L.-N.)
| | - Thomas Grönthal
- Animal Health Diagnostic Unit, Finnish Food Authority, Mustialankatu 3, 00790 Helsinki, Finland;
| | - Viivi Heljanko
- Department of Food Hygiene and Environmental Hygiene, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland; (V.H.); (V.J.); (A.H.); (R.L.-N.)
| | - Venla Johansson
- Department of Food Hygiene and Environmental Hygiene, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland; (V.H.); (V.J.); (A.H.); (R.L.-N.)
| | - Merja Rantala
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, P.O. Box 57, 00014 Helsinki, Finland;
| | - Annamari Heikinheimo
- Department of Food Hygiene and Environmental Hygiene, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland; (V.H.); (V.J.); (A.H.); (R.L.-N.)
- Microbiology Unit, Finnish Food Authority, Mustialankatu 3, 00790 Helsinki, Finland
| | - Riikka Laukkanen-Ninios
- Department of Food Hygiene and Environmental Hygiene, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland; (V.H.); (V.J.); (A.H.); (R.L.-N.)
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Vieira-Pinto M, Langkabel N, Santos S, Alban L, Laguna JG, Blagojevic B, Meemken D, Bonardi S, Antunović B, Ghidini S, Maurer P, Alvseike O, Laukkanen-Ninios R. A European survey on post-mortem inspection of finishing pigs: Total condemnation criteria to declare meat unfit for human consumption. Res Vet Sci 2022; 152:72-82. [DOI: 10.1016/j.rvsc.2022.07.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 06/12/2022] [Accepted: 07/18/2022] [Indexed: 12/01/2022]
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Törmä K, Kaukonen E, Lundén J, Fredriksson-Ahomaa M, Laukkanen-Ninios R. A comparative analysis of meat inspection data as an information source of the health and welfare of broiler chickens based on Finnish data. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Törmä K, Lundén J, Kaukonen E, Fredriksson-Ahomaa M, Laukkanen-Ninios R. Prerequisites of inspection conditions for uniform post-mortem inspection in broiler chicken slaughterhouses in Finland. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108384] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sauvala M, Woivalin E, Kivistö R, Laukkanen-Ninios R, Laaksonen S, Stephan R, Fredriksson-Ahomaa M. Hunted game birds - Carriers of foodborne pathogens. Food Microbiol 2021; 98:103768. [PMID: 33875204 DOI: 10.1016/j.fm.2021.103768] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 11/03/2020] [Revised: 12/21/2020] [Accepted: 02/16/2021] [Indexed: 10/22/2022]
Abstract
Game birds may carry zoonotic bacteria in their intestines and transmit them to hunters through bird handling or through the handling and consumption of contaminated meat. In this study, the prevalence of foodborne bacteria was screened from game bird faeces and mallard breast meat using PCR. The sampling occurred in southern Finland from August to December during the hunting season. Isolates were characterized by multi-locus sequence typing. Mesophilic aerobic bacteria and Escherichia coli counts were used to assess the microbial contamination of mallard meat. In total, 100 woodpigeon (Columba palumbus), 101 pheasants (Phasianus colchicus), 110 mallards (Anas platyrhynchos), and 30 teals (Anas crecca) were screened during the hunting season. Additionally, 100 mallard breast meat samples were collected. Campylobacter and Listeria were commonly detected in the faeces and Listeria on mallard meat. L. monocytogenes of sequence types associated with human listeriosis were frequently found in game bird faeces and on mallard meat. Good hygiene during game bird handling, storing the game bird meat frozen, and proper heat treatment are important measures to minimize the health risk for hunters and consumers.
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Affiliation(s)
- Mikaela Sauvala
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Finland.
| | - Emma Woivalin
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Finland
| | - Rauni Kivistö
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Finland
| | - Riikka Laukkanen-Ninios
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Finland; Food Safety Department, Finnish Food Authority, Helsinki, Finland
| | - Sauli Laaksonen
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, Finland
| | - Roger Stephan
- Institute for Food Safety and Hygiene, Vetsuisse Faculty, University of Zurich, Switzerland
| | - Maria Fredriksson-Ahomaa
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Finland
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Laukkanen-Ninios R, Rahkila R, Oivanen L, Wirta ER, Fredriksson-Ahomaa M. Views of veterinarians and meat inspectors concerning the practical application of visual meat inspection on domestic pigs in Finland. J Verbrauch Lebensm 2019. [DOI: 10.1007/s00003-019-01265-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractThe post-mortem inspection of domestic pigs within the European Union was revised in 2014, primarily to include visual meat inspection of each carcase and offal. Palpations and incisions were removed from routine meat inspection procedures, as they are mostly used to detect pathological lesions caused by organisms irrelevant for public health, and instead can cause cross-contamination of carcases with foodborne pathogens. However, examination of all external surfaces of the carcase and organs, declaration of patho-physiological lesions as unfit for human consumption, and possibility for minimal handling of carcases and offals were held in place. In addition, the European Food Safety Authority suggested that palpation and incisions should be performed outside the slaughter line, but this was not incorporated in the revised legislation. We surveyed in 2014 the opinions of meat inspectors and veterinarians using an online questionnaire to determine what practical measures are required for the visual meat inspection procedure and when meat inspection staff consider additional palpations and incisions necessary. Based on the survey, turning the carcase and organs or technical arrangements such as mirrors were seen necessary to view all external surfaces. In addition, the pluck set cannot be trimmed on the side line. Local lesions, such as abscesses and lesions in the lymph nodes, signs of systemic infection and lymphoma, were the major lesions requiring additional post-mortem meat inspection procedures. Meat inspection personnel raised concerns on the poor quality of food chain information and export requirements demanding palpations and incisions. The efficient use of visual meat inspection requires legislation to better support the implementation and application of it, changes in the slaughter line layout and a possibility to classify incoming pig batches based on their risk.
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Sauvala M, Laaksonen S, Laukkanen-Ninios R, Jalava K, Stephan R, Fredriksson-Ahomaa M. Microbial contamination of moose (Alces alces) and white-tailed deer (Odocoileus virginianus) carcasses harvested by hunters. Food Microbiol 2019; 78:82-88. [DOI: 10.1016/j.fm.2018.09.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 09/12/2018] [Accepted: 09/12/2018] [Indexed: 11/30/2022]
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Falzon LC, Lechner I, Chantziaras I, Collineau L, Courcoul A, Filippitzi ME, Laukkanen-Ninios R, Peroz C, Pinto Ferreira J, Postma M, Prestmo PG, Phythian CJ, Sarno E, Vanantwerpen G, Vergne T, Grindlay DJC, Brennan ML. Quantitative Outcomes of a One Health approach to Study Global Health Challenges. Ecohealth 2018; 15:209-227. [PMID: 29330676 PMCID: PMC6003973 DOI: 10.1007/s10393-017-1310-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 11/18/2017] [Accepted: 11/20/2017] [Indexed: 06/07/2023]
Abstract
Having gained momentum in the last decade, the One Health initiative promotes a holistic approach to address complex global health issues. Before recommending its adoption to stakeholders, however, it is paramount to first compile quantitative evidence of the benefit of such an approach. The aim of this scoping review was to identify and summarize primary research that describes monetary and non-monetary outcomes following adoption of a One Health approach. An extensive literature search yielded a total of 42,167 references, of which 85 were included in the final analysis. The top two biotic health issues addressed in these studies were rabies and malaria; the top abiotic health issue was air pollution. Most studies described collaborations between human and animal (n = 42), or human and environmental disciplines (n = 41); commonly reported interventions included vector control and animal vaccination. Monetary outcomes were commonly expressed as cost-benefit or cost-utility ratios; non-monetary outcomes were described using disease frequency or disease burden measurements. The majority of the studies reported positive or partially positive outcomes. This paper illustrates the variety of health challenges that can be addressed using a One Health approach, and provides tangible quantitative measures that can be used to evaluate future implementations of the One Health approach.
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Affiliation(s)
- Laura C Falzon
- Veterinary Public Health Institute, University of Bern, Schwarzenburgstrasse 155, 3097, Liebefeld, Switzerland.
- Institute of Infection and Global Health, University of Liverpool, 8 West Derby Street, Liverpool, L69 7BE, UK.
| | - Isabel Lechner
- Veterinary Public Health Institute, University of Bern, Schwarzenburgstrasse 155, 3097, Liebefeld, Switzerland
| | - Ilias Chantziaras
- Veterinary Epidemiology Unit, Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | | | - Aurélie Courcoul
- Anses, Laboratory of Animal Health, Epidemiology Unit, University Paris Est, 23, Avenue du Général de Gaulle, 94706, Maisons-Alfort Cedex, France
| | - Maria-Eleni Filippitzi
- Veterinary Epidemiology Unit, Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Riikka Laukkanen-Ninios
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014, Helsinki, Finland
| | | | | | - Merel Postma
- Veterinary Epidemiology Unit, Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Pia G Prestmo
- School of Veterinary Sciences, University of Bristol, Langford House, Langford, Bristol, BS40 5DU, UK
| | - Clare J Phythian
- Section for Small Ruminant Research, Faculty of Veterinary Medicine, Institute for Production Animal Clinical Science, Norwegian University of Life Sciences, 4325, Sandnes, Norway
| | - Eleonora Sarno
- Institute for Food Safety and Hygiene, University of Zurich, Winterthurerstrasse 272, 8057, Zürich, Switzerland
| | - Gerty Vanantwerpen
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Timothée Vergne
- Veterinary Epidemiology Economics and Public Health group, Royal Veterinary College, London, UK
- MIVEGEC Group, Institut de Recherche pour le développement, Montpellier, France
- UMR ENVT-INRA IHAP, University of Toulouse, Toulouse, France
| | - Douglas J C Grindlay
- Centre of Evidence-based Dermatology, The University of Nottingham, King's Meadow Campus, Nottingham, NG7 2NR, UK
| | - Marnie L Brennan
- Centre for Evidence-based Veterinary Medicine, School of Veterinary Medicine and Science, The University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
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Joutsen S, Laukkanen-Ninios R, Henttonen H, Niemimaa J, Voutilainen L, Kallio ER, Helle H, Korkeala H, Fredriksson-Ahomaa M. Yersiniaspp. in Wild Rodents and Shrews in Finland. Vector Borne Zoonotic Dis 2017; 17:303-311. [DOI: 10.1089/vbz.2016.2025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- Suvi Joutsen
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Riikka Laukkanen-Ninios
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | | | | | - Liina Voutilainen
- Natural Resources Institute Finland, Vantaa, Finland
- Department of Virology, University of Helsinki, Helsinki, Finland
| | - Eva R. Kallio
- Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, Finland
| | - Heikki Helle
- Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, Finland
| | - Hannu Korkeala
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Maria Fredriksson-Ahomaa
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
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Joutsen S, Eklund KM, Laukkanen-Ninios R, Stephan R, Fredriksson-Ahomaa M. Sheep carrying pathogenic Yersinia enterocolitica bioserotypes 2/O:9 and 5/O:3 in the feces at slaughter. Vet Microbiol 2016; 197:78-82. [PMID: 27938687 DOI: 10.1016/j.vetmic.2016.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 09/15/2016] [Revised: 11/08/2016] [Accepted: 11/08/2016] [Indexed: 01/22/2023]
Abstract
Yersinia enterocolitica is a heterogeneous species including non-pathogenic strains belonging to biotype 1A and pathogenic strains belonging to biotypes 1B and 2-5. Pathogenic strains of biotypes 2-4 carrying the ail virulence gene have frequently been isolated from domestic pigs at slaughter. In sheep, mostly non-pathogenic biotype 1A strains have been reported. In our study, the prevalence of ail-positive Y. enterocolitica was studied by PCR and culturing in 406 young sheep (<1year of age) and 139 older sheep at slaughter in Finland. When using PCR, the detection rate was 11% (45/406) in young sheep originating from 11 (18%) farms. Surprisingly, Y. enterocolitica belonging to bioserotypes 2/O:9 and 5/O:3, carrying both chromosomal and plasmid-borne virulence genes, were isolated from the fecal samples of 10 (2%) and 23 (4%) sheep, respectively. All isolates of bioserotypes 2/O:9 (19 isolates) and 5/O:3 (53 isolates) carried the chromosomal virulence genes ail, inv, ystA, and myfA, and almost all isolates (71/72) also carried the virulence genes virF and yadA located on the virulence plasmid. The isolates showed high susceptibility to tested antimicrobials and low genetic diversity by PFGE. Y. enterocolitica bioserotype 5/O:3 is a very rare bioserotype, and has earlier only sporadically been reported in European wildlife and in sheep in Australia and New Zealand. Bioserotype 2/O:9 is a common bioserotype found in humans with yersiniosis, and has sporadically been isolated in wild and domestic animals.
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Affiliation(s)
- Suvi Joutsen
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, Agnes Sjöbergin katu 2, 00014 University of Helsinki, Finland
| | - Kirsi-Maria Eklund
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, Agnes Sjöbergin katu 2, 00014 University of Helsinki, Finland
| | - Riikka Laukkanen-Ninios
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, Agnes Sjöbergin katu 2, 00014 University of Helsinki, Finland
| | - Roger Stephan
- Institute for Food Safety and Hygiene, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 272 CH-8057 Zürich, Switzerland
| | - Maria Fredriksson-Ahomaa
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, Agnes Sjöbergin katu 2, 00014 University of Helsinki, Finland.
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Alakurtti S, Keto-Timonen R, Virtanen S, Martínez PO, Laukkanen-Ninios R, Korkeala H. Large Diversity of PorcineYersinia enterocolitica4/O:3 in Eight European Countries Assessed by Multiple-Locus Variable-Number Tandem-Repeat Analysis. Foodborne Pathog Dis 2016; 13:289-95. [DOI: 10.1089/fpd.2015.2095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Sini Alakurtti
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Riikka Keto-Timonen
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Sonja Virtanen
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Pilar Ortiz Martínez
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Riikka Laukkanen-Ninios
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Hannu Korkeala
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
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Rahikainen Ibañez T, Laukkanen-Ninios R, Hakkinen M, Johansson T, Vilar M, Korkeala H. Prevalence of Pathogenic Yersinia enterocolitica in Finnish Slaughter Pigs. J Food Prot 2016; 79:677-81. [PMID: 27052875 DOI: 10.4315/0362-028x.jfp-15-389] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The prevalence of human pathogenic Yersinia enterocolitica was determined in tonsil and intestinal content samples from 388 healthy fattening pigs at the four biggest Finnish slaughterhouses. These slaughterhouses process 73% of pigs in Finland. Tonsil samples were tested by PCR targeted for yadA, and intestinal samples were cultured. All pathogenic Y. enterocolitica isolates represented bioserotype 4/O:3. The prevalence of Y. enterocolitica in tonsil samples was 60% (95% confidence limit, 55.4 to 65.1%), and its prevalence in intestinal samples was 26% (95% confidence limit, 22.1 to 31.2%). The prevalence of Y. enterocolitica in tonsil and intestinal samples varied between the four slaughterhouses. The tonsil prevalence of Y. enterocolitica was higher in slaughterhouse B, and the prevalence in intestinal content was higher in slaughterhouse C. There were more positive results in both tonsil and intestinal samples in pigs coming from fattening farms than in pigs coming from farrowing-and-fattening farms. A seasonal variation was observed in the prevalence of Y. enterocolitica in intestinal samples, with the highest prevalence during July and August, but no seasonal variation was detected in tonsil samples.
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Affiliation(s)
- T Rahikainen Ibañez
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, FI-00014 Helsinki University, Finland.
| | - R Laukkanen-Ninios
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, FI-00014 Helsinki University, Finland
| | - M Hakkinen
- Food and Feed Microbiology Research Unit, Research and Laboratory Department, Finnish Food Safety Authority Evira, Mustialankatu 3, FI-00790 Helsinki, Finland
| | - T Johansson
- Food and Feed Microbiology Research Unit, Research and Laboratory Department, Finnish Food Safety Authority Evira, Mustialankatu 3, FI-00790 Helsinki, Finland
| | - M Vilar
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, FI-00014 Helsinki University, Finland
| | - H Korkeala
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, FI-00014 Helsinki University, Finland
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Vilar M, Virtanen S, Laukkanen-Ninios R, Korkeala H. Bayesian modelling to identify the risk factors for Yersinia enterocolitica contamination of pork carcasses and pluck sets in slaughterhouses. Int J Food Microbiol 2015; 197:53-7. [DOI: 10.1016/j.ijfoodmicro.2014.12.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 11/03/2014] [Accepted: 12/15/2014] [Indexed: 10/24/2022]
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Laukkanen-Ninios R, Fredriksson-Ahomaa M, Korkeala H. EnteropathogenicYersiniain the Pork Production Chain: Challenges for Control. Compr Rev Food Sci Food Saf 2014. [DOI: 10.1111/1541-4337.12108] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Riikka Laukkanen-Ninios
- Dept. of Food Hygiene and Environmental Health; Faculty of Veterinary Medicine; Univ. of Helsinki; P.O. Box 66, 00014 Helsinki Finland
| | - Maria Fredriksson-Ahomaa
- Dept. of Food Hygiene and Environmental Health; Faculty of Veterinary Medicine; Univ. of Helsinki; P.O. Box 66, 00014 Helsinki Finland
| | - Hannu Korkeala
- Dept. of Food Hygiene and Environmental Health; Faculty of Veterinary Medicine; Univ. of Helsinki; P.O. Box 66, 00014 Helsinki Finland
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Novoslavskij A, Šernienė L, Malakauskas A, Laukkanen-Ninios R, Korkeala H, Malakauskas M. Prevalence and genetic diversity of enteropathogenic Yersinia spp. in pigs at farms and slaughter in Lithuania. Res Vet Sci 2013; 94:209-13. [DOI: 10.1016/j.rvsc.2012.09.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 09/25/2012] [Accepted: 09/29/2012] [Indexed: 11/24/2022]
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Laukkanen-Ninios R, Didelot X, Jolley KA, Morelli G, Sangal V, Kristo P, Imori PFM, Fukushima H, Siitonen A, Tseneva G, Voskressenskaya E, Falcao JP, Korkeala H, Maiden MCJ, Mazzoni C, Carniel E, Skurnik M, Achtman M. Population structure of the Yersinia pseudotuberculosis complex according to multilocus sequence typing. Environ Microbiol 2011; 13:3114-27. [PMID: 21951486 PMCID: PMC3988354 DOI: 10.1111/j.1462-2920.2011.02588.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Multilocus sequence analysis of 417 strains of Yersinia pseudotuberculosis revealed that it is a complex of four populations, three of which have been previously assigned species status [Y. pseudotuberculosis sensu stricto (s.s.), Yersinia pestis and Yersinia similis] and a fourth population, which we refer to as the Korean group, which may be in the process of speciation. We detected clear signs of recombination within Y. pseudotuberculosis s.s. as well as imports from Y. similis and the Korean group. The sources of genetic diversification within Y. pseudotuberculosis s.s. were approximately equally divided between recombination and mutation, whereas recombination has not yet been demonstrated in Y. pestis, which is also much more genetically monomorphic than is Y. pseudotuberculosis s.s. Most Y. pseudotuberculosis s.s. belong to a diffuse group of sequence types lacking clear population structure, although this species contains a melibiose-negative clade that is present globally in domesticated animals. Yersinia similis corresponds to the previously identified Y. pseudotuberculosis genetic type G4, which is probably not pathogenic because it lacks the virulence factors that are typical for Y. pseudotuberculosis s.s. In contrast, Y. pseudotuberculosis s.s., the Korean group and Y. pestis can all cause disease in humans.
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Affiliation(s)
- Riikka Laukkanen-Ninios
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, FI-00014, University of Helsinki, Finland
| | - Xavier Didelot
- Department of Statistics, University of Oxford, Oxford OX1 3TG, UK
| | - Keith A. Jolley
- Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK
| | - Giovanna Morelli
- Max-Planck-Institut für Infektionsbiologie, 10117 Berlin, Germany
| | - Vartul Sangal
- Max-Planck-Institut für Infektionsbiologie, 10117 Berlin, Germany
| | - Paula Kristo
- Sequencing Core Facility, Haartman Institute, P.O. Box 21, FI-00014 University of Helsinki, Finland
| | - Priscilla F. M. Imori
- Department of Clinical, Toxicological, and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Brazil
| | - Hiroshi Fukushima
- Shimane Prefectural Institute of Public Health and Environmental Science, 582-1 Nishihamasada, Matsue, Shimane 699-0122, Japan
| | - Anja Siitonen
- Bacteriology Unit, National Institute for Health and Welfare (THL), P.O. Box 30, FI-00271 Helsinki, Finland
| | | | | | - Juliana P. Falcao
- Department of Clinical, Toxicological, and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Brazil
| | - Hannu Korkeala
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, FI-00014, University of Helsinki, Finland
| | - Martin C. J. Maiden
- Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK
| | - Camila Mazzoni
- Environmental Research Institute, University College Cork, Lee Road, Cork, Ireland
| | - Elisabeth Carniel
- Institut Pasteur, Yersinia research Unit, Yersinia National Reference Laboratory, Paris France
| | - Mikael Skurnik
- Department of Bacteriology and Immunology, Haartman Institute, P.O. Box 21, FI-00014, University of Helsinki, Helsinki, Finland
- Helsinki University Central Hospital Laboratory Diagnostics, Helsinki, Finland
| | - Mark Achtman
- Environmental Research Institute, University College Cork, Lee Road, Cork, Ireland
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