Akina Hino

Cox1 sequences from 571 Strongyloides worms isolated from 159 hosts were collapsed into 100 haplotypes. The average pairwise distances of nucleotide sequences (711?bp) and translated amino acid sequences (237 positions) among the haplotypes were 0.036 (range, 0.001–0.079) and 0.003 (range, 0–0.025), respectively (Supplementary Tables S1 and S2). A maximum-likelihood tree was constructed to assess the phylogenetic relationships between these haplotypes (Fig. 1). Two distinct groups were observed.