Evaluation of oral fluids for surveillance of foodborne and zoonotic pathogens in pig farms

Schott, Franziska; Hoffmann, Karolin; Sarno, Eleonora; Bangerter, Patrick D.; Stephan, Roger; Overesch, Gudrun; Haessig, Michael; Sidler, Xaver; Graage, Robert (2021). Evaluation of oral fluids for surveillance of foodborne and zoonotic pathogens in pig farms. Journal of veterinary diagnostic investigation, 33(4), pp. 655-663. Sage 10.1177/10406387211021599

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The use of oral fluid (OF) to detect zoonotic pathogens in pigs has been only scarcely assessed. We evaluated OF as a potential specimen for detection by culture of methicillin-resistant Staphylococcus aureus (MRSA) and Yersinia enterocolitica, and the detection of antibodies against Salmonella spp. and hepatitis E virus (HEV) using commercial ELISAs. Samples from 33 pig farms were collected at the beginning and end of the fattening period. Results of the OF samples were compared with the results of serum samples and nasal swabs from individual pigs and pen floor fecal samples, using the Cohen kappa (κ) and the McNemar test. For Salmonella spp. antibodies, OF samples were negative, although the corresponding serum samples were positive. The detection of HEV antibodies in sera and OF had agreement at the first sampling, and poor and significant agreement at the second sampling (κ = 0.185, McNemar p = 0.238; κ = 0.088, McNemar p < 0.001). At both sampling times, the detection of MRSA in nasal swabs and OF showed agreement (κ = 0.466, McNemar p = 0.077; κ = 0.603, McNemar p = 1); agreement was seen for the detection of Y. enterocolitica in fecal and OF samples (κ = 0.012, McNemar p = 0.868; κ = 0.082, McNemar p = 0.061, respectively). According to the McNemar test, the use of pen-based OFs is more feasible for the detection of MRSA and Y. enterocolitica by culture than is detection of antibodies by commercial ELISA.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Veterinary Bacteriology

UniBE Contributor:

Overesch, Gudrun

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 590 Animals (Zoology)
600 Technology > 610 Medicine & health
600 Technology > 630 Agriculture

ISSN:

1943-4936

Publisher:

Sage

Language:

English

Submitter:

Pamela Schumacher

Date Deposited:

28 Jan 2022 10:50

Last Modified:

05 Dec 2022 16:00

Publisher DOI:

10.1177/10406387211021599

PubMed ID:

34075814

BORIS DOI:

10.48350/163640

URI:

https://boris.unibe.ch/id/eprint/163640

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