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Comparative Study
. 2006 Jun 6;48(1):4.
doi: 10.1186/1751-0147-48-4.

Intestinal carriage of Campylobacter jejuni and Campylobacter coli among cattle from south-western Norway and comparative genotyping of bovine and human isolates by amplified-fragment length polymorphism

G Johnsen  1 , K Zimmerman, B-A Lindstedt, T Vardund, H Herikstad, G Kapperud
Affiliations
Comparative Study

Intestinal carriage of Campylobacter jejuni and Campylobacter coli among cattle from south-western Norway and comparative genotyping of bovine and human isolates by amplified-fragment length polymorphism

G Johnsen et al. Acta Vet Scand. .

Abstract

In a survey conducted in 1999-2001, the carriage of thermotolerant Campylobacters in cattle was investigated, and the genetic diversity of C. jejuni within one herd was examined and compared with human isolates. C. jejuni, C. coli and other thermotolerant Campylobacter spp. were isolated from intestinal contents from 26%, 3% and 2% of 804 cattle, respectively. The carriage rate was higher in calves (46%) than in adults (29%). Twenty-nine C. jejuni isolates from one herd and 31 human isolates from the study area were genotyped with amplified-fragment length polymorphism (AFLP). Eighty-three % of the bovine isolates fell into three distinct clusters with 95-100% similarity, persistent in the herd for 5-10 months. Among human isolates, 58% showed >90% similarity with bovine isolates. The results show that cattle are a significant and stable reservoir for C. jejuni in the study area. Transmission between individuals within the herd may be sufficient to maintain a steady C. jejuni population independent of environmental influx. The results of this study have provided new information on C. jejuni and C. coli transmission, and also on the carriage in cattle, genotypes stability and similarity between bovine and human isolates.

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Figures

Figure 1
Figure 1
Dendrogram based on AFLP fragment patterns of 60 Campylobacter jejuni isolates, 29 from intestinal material from one cattle herd and 31 clinical isolates from human patients in the study area during the study period, with strain identity, source of isolation, isolation date and AFLP profile identity. The vertical line marks 95% similarity.
See this image and copyright information in PMC

References

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