O. volvulus nodule characteristics and worm densities in the IVM response/treatment categories.

The number of subjects with nodules containing viable worms, number of nodules with viable worms, and average number of males and females per nodule were compared between the different IVM response categories (see Table 2 for allocation of communities to response categories) and the IVM naïve community. Begbomdo and poor response communities were significantly higher (§ p ¶ Ivermectin naïve at start of study.