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. 2023 Aug 28;8(10):1911–1919. doi: 10.1038/s41564-023-01461-4

Fig. 5. Pairwise IBD sharing and relatedness networks suggest clonal transmission and expansion of K13 622I parasites.

Fig. 5

a, Pairwise IBD sharing across all three regions of Ethiopia. The plot shows the probability that any two isolates are identical by descent, where the x axis indicates IBD values ranging 0–1 and the y axis indicates the frequency (%) of isolates sharing IBD. The inset highlights highly related parasite pairs from out of total pairs (n = 44,883), with a heavy tail in the distribution and some highly related pairs of samples having IBD ≥ 0.95. b, Pairwise IBD sharing within parasites carrying K13 622I vs wild type (P < 0.001, two-tailed, Mann–Whitney U-test). Boxes indicate the interquartile range, the line indicates the median, the whiskers show the 95% confidence intervals and black dots show outlier values. P value determined using Mann–Whitney test is shown. c, Relatedness network of highly related parasite pairs (n = 150) sharing IBD ≥ 0.95. Colours correspond to K13 622I mutant and wild parasites. d, Relatedness network of only K13 622I parasite pairs (n = 31) sharing IBD ≥ 0.95 at the district level/local scale. Colours correspond to districts across three regions in Ethiopia. In both c and d, each node identifies a unique isolate and an edge is drawn between two isolates if they share their genome above IBD ≥ 0.95. Isolates that do not share IBD ≥ 0.95 of their genome with any other isolates are not shown.