*3.3. Genetic Diversity between Isolates*

*Campylobacter* isolates were group according to the Rep-PCR dendrogram patterns (Figure 2). In genetic diversity, more than 95% similarity was shown in 38 isolates (84.4%) and these isolates were grouped into 10 groups (Figure 2). When comparing the 10 groups, obvious geographic correlations were not observed (Figure 2). For instance, key numbers 21–23 in group 6 were isolated from same location (Ulsan). Although 26–27 in group 7, and 39–41 in group 9 were isolated from same location (Cheongju), they were placed in different genetic group. However, Hiett et al. [43] subtyped for 50 *Campylobacter* isolates, and the most isolates from same location were genetically very similar. Like this result, very close genetic similarity can be expected for the isolates from same locations, but it was not observed in Korea as discussed above. This result indicates that chicken and duck in different wet markets in Korea may be distributed from only few slaughterhouses.

**Figure 2.** Dendrogram and gel-like image of the DiversiLab systems for *Campylobacter* isolates from poultry samples.
