A, ClonalFrame tree of the main Campylobacter jejuni clade showing distribution of rural and urban young children with animal source sequence types (STs) (rural children are shown in red; urban children, orange; chicken, yellow; avian sources excluding chicken, blue; cattle, brown; pigs, pink; sheep, green; cattle and avian sources, gray; and pets, light blue). B, Attribution of the source of infection in children 0–4 years of age in rural areas and urban areas (bars with black diagonal lines), by probabilistic assignment of multilocus sequence typing allele frequency by use of Structure software.