Figure 1. Estimates of Wright's F-statistics in Wuchereria bancrofti for the pre-treatment villages of Tangonko (black diamonds), Badongo (grey open circles) and for the treated village of Perigban (black squares), which received one round of chemotherapy (albendazole+ivermectin).

The error bars are the 95% confidence intervals. F_IT estimates the total degree of parasite inbreeding; F_IS describes the level of non-random mating within the infrapopulation; and shows the variation in microfilarial allele frequency within the host subpopulation (village).