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Dracunculiasis control — DTM&H MCQ

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HardHelminthic infectionsDracunculiasis controlDTM&H

A Guinea-worm containment team supplies filters and dresses an emerging worm, but village transmission continues. Which observed practice most directly explains failure of case containment?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: A — The affected limb is immersed in the communal pond

The best answer is “The affected limb is immersed in the communal pond”. Contact between an emerging female worm and water triggers release of larvae, which are ingested by copepods and perpetuate transmission. Keeping the lesion out of every shared water source is therefore the core containment action; filters and larvicide cannot compensate for deliberate contamination.

Reference: WHO: Dracunculiasis (Guinea-worm disease): https://www.who.int/news-room/fact-sheets/detail/dracunculiasis-(guinea-worm-disease)