Figure 2.

Presence and allelic diversity of 15 antimicrobial resistance genes in C. jejuni and C. coli genomes. Phylogenetic trees were reconstructed using gene‐by‐gene concatenated alignments of 595 core genes, and the neighbour‐joining algorithm for for 167 C. jejuni (A) and 92 C. coli (B). Isolate source is shown in the first column for chicken (dark green), cattle (green), pigs (light green), humans (red) and sewage (blue). The second column indicates the resistance status of each isolate as multidrug resistant (dark pink), non‐multidrug resistance (light pink) or not tested (white). Remaining columns indicate allelic variation at known resistance gene loci, with identical alleles coloured with the same colour. The scale represents the number of substitutions per site. [Color figure can be viewed at http://wileyonlinelibrary.com]