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Distribution and Genetic Variability Among Campylobacter Spp. in Switzerland
Campylobacter infections in humans have become more important than Salmonella infections. In Switzerland, a national database with 1028 Campylobacter isolates from poultry, pigs, cats, dogs, cattle, humans, zoo animals and water has been created. The database contains the genetic fingerprint and background information of each Campylobacter isolate. Very informative!

Dominant species could be identified in the different sources with a majority of Campylobacter jejuni in poultry (73%), humans (79%), cattle (95%), zoo animals (40%) and water (100%), of Campylobacter coli in pigs (72%), and of Campylobacter upsaliensis/helveticus in cats and dogs (55%).

The comparison of three genotyping methods, amplified fragment length polymorphism (AFLP), pulsed field gel electrophoresis and restriction fragment length polymorphism, revealed that AFLP allows discrimination between the different Campylobacter species and is the most appropriate method to distinguish specific strains within the same species.

Genotyping analysis demonstrated that the Campylobacter population is heterogeneous among the different sources and that no dominant clone is spread in the country. Genotyping and the resulting database are useful tools to trace back future Campylobacter infections.



Source: J. Keller, B. Wieland, M. Wittwer, R. Stephan, V. Perreten (2007): Distribution and Genetic Variability Among Campylobacter spp. Isolates from Different Animal Species and Humans in Switzerland. In: Zoonoses and Public Health 54 (1), 2–7.



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SWINE PRACTICE

Enrofloxacin and the porcine livermembers
Enrofloxacin (EF) is a widely used fluoroquinolone, usually regarded as a safe and effective treatment for bacterial infections. Adverse effects of EF have previously been demonstrated in some species, but so far there have been no studies looking specifically at the impact of EF on pigs. In this study, three different doses of EF (5, 25 and 125 mg kg bw−1) were administrated to Bama pigs.

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