Fig. 2

Within-infection F _ws fixation indices for each clinical isolate with genome-wide SNP data from Kintampo (N = 45) and Navrongo (N = 40), ordered by increasing index value. The distribution of F _ws values was not significantly different between the populations (Mann–Whitney test, P = 0.52). The horizontal line marks F _ws  = 0.95, above which an isolate may be considered to contain a single predominant genotype; 24 (53 %) of 45 isolates in Kintampo and 20 (50 %) of 40 isolates in Navrongo