Copepod filters for guinea-worm control--users have their say

Area of Science:

• Public Health
• Tropical Medicine
• Water, Sanitation, and Hygiene (WASH)

Background:

• Dracunculiasis (guinea-worm disease) remains endemic in certain Nigerian communities.
• Current water filtration methods, like sewn filters and bucket lid filters, present usability and cost challenges.
• The copepod intermediate host of guinea-worm must be removed from drinking water to prevent transmission.

Purpose of the Study:

• To assess the user preference for a novel plastic funnel filter compared to existing methods for guinea-worm prevention.
• To identify necessary modifications for the plastic funnel filter to be effective under Nigerian field conditions.

Main Methods:

• A field investigation was conducted in Nigerian communities where dracunculiasis is endemic.
• User feedback and preferences were collected regarding different water filtration devices.
• The performance of the plastic funnel filter was evaluated under local conditions.

Main Results:

• A significant majority of the population favored the introduction of the user-friendly plastic funnel filter.
• The existing plastic funnel filter design requires modifications, specifically increasing the outlet diameter.
• Adjusting the outlet diameter is crucial for achieving adequate water flow and preventing premature filter material blockage.

Conclusions:

• The plastic funnel filter shows high potential for improving guinea-worm prevention in Nigeria due to user preference.
• Modifications to the funnel filter's outlet diameter are essential for optimal performance and widespread adoption.
• Implementing user-friendly and effective filtration technologies is key to controlling and potentially eradicating dracunculiasis.