elimination of soil transmitted helminths: one village at a time. humpress harrington (b.n, m.ed)...
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Elimination of Soil Transmitted Helminths: One village at a time.
Humpress Harrington(B.N, M.Ed)
Head, Pacific Adventist University Atoifi Campus
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Gut worms = Soil transmitted helminths
Worms that live in the intestines–Roundworms–Hookworms–Whipworms
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Lifecycle of hookworm
juvenile
Soil
MaleFemale
In person
Penetrates skin
Infective larvae in soil
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Integrated controlWorm Tablets
Use Formal ToiletsFootwear / wash hands
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Community-wide treatment
• Worms killed, but return over time
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STH research at Atoifi• April 2011 – survey of Atoifi and Na’au• April 2012 – survey of Abitona and Sifilo• December 2013 – resurvey Na’au• March 2014 – STH training workshop• August 2014 – survey of Kwai and Ngongosila
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Methods
• A cross-sectional survey• All residents older than 1 year were invited to
participate by:– Providing a single sample of faeces that was
examined using a modified Kato-Katz technique – Completing a questionnaire that asked
demographic and STH-related behaviour questions.
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Atoifi STH team
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Results: 4 villages
• Participation rate was 52.8%, with 402 participants comprising 49.8% males.
• Overall prevalence of hookworm was 22.6% (91/402) (CI 0.95 18.6%-27.1%).
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Health infrastructure and behaviours
• Respondents from Atoifi reported washing hands before eating more often
• More frequently wore footwear outside• Atoifi had safer defaecation practices• Related to prevalence of hookworm in the
four villages
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Island villages: Kwai and Ngongosila
• Participation rate was 70.7% (576/815)• STH prevalence 65.8% (379/576)• Roundworm most common• Hookworm prevalence 20-30% (similar to
Abitona, Na’au, Sifilo)• Some whipworm
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Action arising from the survey
• Feedback of results
• Hospital actions (MDA - albendazole)
• Community actions
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Each village is different!
• Different prevalences of STH• Different issues about toilets• Physical challenges• Social challenges• Cultural challenges
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One village at a time!
• Each village needs a different solution• Solutions must come from the community• Using mapping and qualitative methods to
work in a participatory way looking for long term solutions
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Where to Next?
• Assist the communities to develop their own project proposals for funding for safe water supply and appropriate toilets
• Write manuscripts for publication• Establish Atoifi as the research centre for STH in
Solomon Islands• Seek additional funds to do STH surveys in other
provinces • Work closely with Water Supply and Sanitation
division of the Ministry of Health and NGOs