Fig. 1.

Phylogenetic analysis of G. duodenalis detected from human fecal samples in Zambia. The analysis was based on the gdh gene and involved 63 nucleotide sequences, with a total of 318 positions in the final dataset. The phylogenetic tree was rooted (black circle) to G. ardeae (GenBank accession number AF069060). The numbers at branch nodes represent bootstrap values ≥50%. Reference sequences included in the analysis are shown with their respective GenBank accession numbers, strain name, country of origin and genotype. G. duodenalis strains characterized in this study are shown in bold italic text. Bar, number of substitutions per site.