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STH treatment efficacy — DTM&H MCQ

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HardHelminthic InfectionsSTH treatment efficacyDTM&H

A district survey finds Strongyloides stercoralis in 7% of school-aged children. The ministry is considering the 2024 WHO public-health recommendation. Which intervention matches it?

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Correct answer: E — Annual ivermectin 200 micrograms/kg from age 5 years for a five-year programme

The best answer is “Annual ivermectin 200 micrograms/kg from age 5 years for a five-year programme”. WHO now recommends annual preventive chemotherapy when school-age Strongyloides prevalence is at least 5%, using the district as the implementation unit and treating for at least five years. The 20% threshold belongs to conventional STH programmes, while albendazole and praziquantel do not substitute for this ivermectin strategy.

Reference: WHO guideline on preventive chemotherapy for public-health control of strongyloidiasis: https://iris.who.int/bitstream/handle/10665/378257/9789240094024-eng.pdf