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Detection of Campylobacter species in different types of samples from dairy farms
  1. Ingrid Hansson1,2,
  2. Eva Olsson Engvall1,
  3. Sevinc Ferrari2,
  4. Boel Harbom3 and
  5. Elina Lahti4
  1. 1Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
  2. 2Department of Microbiology, National Veterinary Institute, Uppsala, Sweden
  3. 3Department of Animal Health and Antimicrobial Strategies, National Veterinary Institute, Uppsala, Sweden
  4. 4Department of Epidemiology and Disease Control, National Veterinary Institute, Uppsala, Sweden
  1. Correspondence to Dr Ingrid Hansson, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden; ingrid.hansson{at}slu.se

Abstract

Background Livestock, domestic pets and wildlife can be intestinal carriers of thermotolerant Campylobacter species. These reservoirs can in turn contaminate the environment and food products, thus creating pathways to campylobacteriosis in human beings. The purposes of this study were to investigate sampling strategies applied for surveillance of Campylobacter on dairy cattle farms and to identify the presence and species of Campylobacter in different age groups.

Methods Boot sock and faecal samples were collected from five dairy herds from three age groups—cows, heifers and calves younger than 12 months—and from milk filters.

Results Campylobacter species were isolated in 152 of 250 samples, of which 93 isolates were identified as C jejuni, 51 as C hyointestinalis, two as C lari and one as C coli, whereas five isolates could not be identified to species level. Campylobacter species were isolated from 86 of 110 faecal samples, 60 of 97 sock samples and six of 43 milk filter samples.

Conclusion Faecal samples were the optimal sample type for detection of Campylobacter on dairy farms. However, taking multiple types of samples could be recommended in order to optimise the recovery rate and variety of Campylobacter species detected when investigating the presence of Campylobacter on dairy farms.

  • cattle
  • sampling
  • faeces
  • campylobacter
  • campylobacter hyointestinalis
  • campylobacter jejuni
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Footnotes

  • Funding This research was funded by the Swedish Board of Agriculture.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data availability statement All data relevant to the study are included in the article. Data are available upon request.

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