Reproductive status of female worms from multiply treated subjects, 90 days after ivermectin.

Reproductive status of multiple IVM treated female worms 90 days after the second ivermectin treatment during the study; showing mean microfilarial numbers of total and active (live) stretched microfilariae by age of female worm. The middle aged worms had a significantly higher (‡ p≤0.05) number of microfilariae in the uterus than the young worms. Also the middle aged worms had a significantly higher († p≤ 0.05) number of live stretched mf than both young and older worms.