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      Pig Herds Free from Human Pathogenic Yersinia enterocolitica1

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          Abstract

          Pig herds that provide pork free from zoonotic agents may be possible.

          Abstract

          Pork products are a substantial source of human yersiniosis, a foodborne disease caused by Yersinia enterocolitica. Thus, the ability to eliminate this agent from pig herds would be an important step in producing human pathogen–free pork. Pig herds free from Y. enterocolitica O:3/biovar 4 have been established and maintained. According to serologic and cultural testing results, 15 of 16 specific pathogen–free herds were free from Y. enterocolitica O:3/biovar 4; this closed breeding pyramid has remained free from this organism since 1996. Pig herds free from human pathogenic Y. enterocolitica suggest that human pathogen–free herds could be attained to provide pork free from zoonotic agents.

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          Yersinia enterocolitica.

          Rebecca Cover, Robert Aber (1989)
          Article 0 comments Cited 61 times – based on 0 reviews     Review now
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            Revised biogrouping scheme of Yersinia enterocolitica.

            Hettie M. Janssens, G Wauters, K Kandolo (1986)
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              Prevalence of Yersinia enterocolitica in fattening pigs.

              Sandra Kasimir, Michael Gürtler, Mechthild Linnebur … (2005)
              The prevalence of pathogenic Yersinia enterocolitica in pig herds was monitored during six trials (at four different farrow-to-finisher farms). Samples were taken throughout the whole rearing period from birth of the piglets to the final fattening stage, and different samples were taken from these pigs during the slaughter process. Environmental samples also were evaluated to identify potential sources of on-farm infection. Y. enterocolitica was isolated using irgasan-ticarcillin-potassium chlorate broth enrichment and cefsulodin-irgasan-novobiocin agar culture. Colonies were identified using bio- and serotyping methods and by PCR assay. Pathogenic Y. enterocolitica were not isolated from fecal samples from piglets and weaners. The only fecal samples positive for Y. enterocolitica were obtained during the fattening stage. The prevalence of Y. enterocolitica in fattening pig herds ranged between 0 and 65.4%. Y. enterocolitica isolates were detected at the abattoir in 38.4% of the tonsils, in 3.8% of the ileocecal lymph nodes, on 0.3% of the carcass surfaces before chilling, and on 0% of the carcass surfaces after chilling. Almost all isolates belonged to bioserotype 4/O:3. Only one strain was identified as O:9. All isolates contained the ail gene. The yopT gene was found in 99.1% of the farm isolates but in only 76.6% of the isolates found at the abattoir from the corresponding carcasses. Although a direct link between porcine isolates and human infection has not been demonstrated, the similarity of the bioserotypes in infected pigs and humans and the presence of virulence factors in porcine isolates should encourage further studies to determine the risk of transmission of Y. enterocolitica to humans from pigs and pork products.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Emerg Infect Dis
                Journal ID (publisher-id): EID
                Title: Emerging Infectious Diseases
                Publisher: Centers for Disease Control and Prevention
                ISSN (Print): 1080-6040
                ISSN (Electronic): 1080-6059
                Publication date (Print): December 2007
                Volume: 13
                Issue: 12
                Pages: 1860-1864
                Affiliations
                [* ]Norwegian School of Veterinary Science, Oslo, Norway
                [† ]Nortura, Oslo, Norway; and ‡Animalia, Oslo, Norway
                Author notes
                Address for correspondence: Truls Nesbakken, Norwegian School of Veterinary Science, Department of Food Safety and Infection Biology, PO Box 8146 Dep, N-0033 Oslo, Norway; email: truls.nesbakken@ 123456veths.no
                Article
                Publisher ID: 07-0531
                DOI: 10.3201/eid1312.070531
                PMC ID: 2876758
                PubMed ID: 18258036
                SO-VID: f5e2fdcf-1940-4186-b81d-9340936e5f8a
                History
                Categories
                Subject: Research

                ScienceOpen disciplines: Infectious disease & Microbiology
                Keywords: research,pigs,feces,culture,yersinia enterocolitica,serology,herd level,public health
                Data availability:
                ScienceOpen disciplines: Infectious disease & Microbiology
                Keywords: research, pigs, feces, culture, yersinia enterocolitica, serology, herd level, public health

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