[Therapeutic trial with ivermectin in loiasis with medium and high microfilaremia].

Treatment with ivermectin at the dosage of 200 microgram/kg in 28 Congolese loiasis patients led to an important decrease of the microfilaremia on day 7, with a reduction of about 90% of the initial parasite load. However, no negativation was observed and, moreover, the parasitemia did not change from day 7 to day 14. Tolerance was quite good, but weak to moderate reactions, linked to the lysis of the microfilariae, were observed in one third of the patients with a microfilaremia greater or equal to 2,500/mm3.