Age structure of all female O. volvulus worms sampled in IVM response/treatment categories.

The IVM naïve community had significantly higher numbers of young worms (§ p¶ Begbomdo was IVM naïve at the start of the study.

未接触过伊维菌素（IVM）的群体，其年轻蠕虫的数量显著更高（§ p¶ Begbomdo群体在研究开始时即为IVM未接触群体。