Efficacy of albendazole against the whipworm trichuris trichiura--a randomised, controlled trial

Area of Science:

• Medical Research
• Parasitology
• Public Health

Background:

• Whipworm (Trichuris trichiura) infections are a significant public health concern, particularly in school-aged children.
• Effective deworming strategies are crucial for controlling parasitic infections and improving child health.

Purpose of the Study:

• To evaluate the efficacy of different albendazole dosages against Trichuris trichiura in school children.
• To assess the feasibility of albendazole for school-based deworming programs in South Africa.

Main Methods:

• A randomized controlled trial was conducted with primary school children in the south-western Cape, South Africa.
• Participants received varying doses of albendazole (400, 800, or 1200 mg) or placebo, with cure rates and egg reduction measured.
• Infection dynamics of Trichuris and Ascaris were monitored.

Main Results:

• Albendazole demonstrated dose-dependent efficacy, with cure rates of 23% (400 mg), 56% (800 mg), and 67% (1200 mg) after the final treatment.
• Significant reductions in fecal egg counts were observed, ranging from 96.8% to 99.7%.
• Environmental re-infection was evident, as placebo recipients became infected during the study.

Conclusions:

• The 400 mg dose of albendazole showed low efficacy for Trichuris trichiura.
• Albendazole's classification as a Schedule 4 prescription medicine in South Africa impedes its use in deworming programs.
• Urgent de-scheduling is recommended due to albendazole's high efficacy, especially against hookworm in the region.