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Bull World Health Organ. 2003;81(1):35-42. Epub 2003 Mar 11.

A comparison of the efficacy of single doses of albendazole, ivermectin, and diethylcarbamazine alone or in combinations against Ascaris and Trichuris spp.

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Department of Parasitology, College of Public Health, University of the Philippines Manila, Ermita, Manila, Philippines.



To determine the efficacy of single doses of albendazole, ivermectin and diethylcarbamazine, and of the combinations albendazole + ivermectin and albendazole + diethylcarbamazine against common intestinal helminthiases caused by Ascaris and Trichuris spp.


In a randomized, placebo-controlled trial, infected children were randomly assigned to treatment with albendazole + placebo, ivermectin + placebo, diethylcarbamazine + placebo, albendazole + ivermectin, or albendazole + diethylcarbamazine. The Kato-Katz method was used for qualitative and quantitative parasitological diagnosis. The chi2 test was used to determine the significance of cure rates, repeated measures analysis of variance for the comparison of mean log egg counts, the Newman-Keuls procedure for multiple comparison tests, and logistic regression for the comparison of infection rates at days 180 and 360 after treatment.


Albendazole, ivermectin and the drug combinations gave significantly higher cure and egg reduction rates for ascariasis than diethylcarbamazine. For trichuriasis, albendazole + ivermectin gave significantly higher cure and egg reduction rates than the other treatments: the infection rates were lower 180 and 360 days after treatment.


Because of the superiority of albendazole + ivermectin against both lymphatic filariasis and trichuriasis, this combination appears to be a suitable tool for the integrated or combined control of both public health problems.

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