Abstract
Campylobacter jejuni isolates of human, canine, feline, bovine and poultry origin were investigated for their genomic diversity using O-antigen typing (n = 271), SmaI (n = 158) and XhoI (n = 158) macrorestriction analysis and ERIC-PCR (n = 107). The O-antigens O:1/44, O:2, O:4 complex, O:37. O:40 were identified and 53.7% of the human and 56.1% of the animal strains were typable with the available antisera. Two ERIC-PCR pattern groups were generated representing human and animal strains as well as those exclusively of animal origin. XhoI macrorestriction analysis also distinguished 'human' and 'non-human' strain clusters, but by SmaI restriction mainly serotype-associated clusters were found. In conclusion, genomic differences may occur between 'human' and 'non-human' strains and this may reflect their potential to overcome the barrier from animals to humans.
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