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Turning poop into profit: Cost-effectiveness and soil transmitted helminth infection risk associated with human excreta reuse in Vietnam

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  • Ngan Tran-Thi
  • Rachel J Lowe
  • Janna M Schurer
  • Tu Vu-Van
  • Lauren E MacDonald
  • Phuc Pham-Duc

Abstract

Human excreta is a low cost source of nutrients vital to plant growth, but also a source of pathogens transmissible to people and animals. We investigated the cost-savings and infection risk of soil transmitted helminths (STHs) in four scenarios where farmers used either inorganic fertilizer or fresh/composted human excreta supplemented by inorganic fertilizer to meet the nutrient requirements of rice paddies in the Red River Delta, Vietnam. Our study included two main components: 1) a risk estimate of STH infection for farmers who handle fresh excreta, determined by systematic review and meta-analysis; and 2) a cost estimate of fertilizing rice paddies, determined by nutrient assessment of excreta, a retailer survey of inorganic fertilizer costs, and a literature review to identify region-specific inputs. Our findings suggest that farmers who reuse fresh excreta are 1.24 (95% CI: 1.13–1.37, p-value

Suggested Citation

  • Ngan Tran-Thi & Rachel J Lowe & Janna M Schurer & Tu Vu-Van & Lauren E MacDonald & Phuc Pham-Duc, 2017. "Turning poop into profit: Cost-effectiveness and soil transmitted helminth infection risk associated with human excreta reuse in Vietnam," PLOS Neglected Tropical Diseases, Public Library of Science, vol. 11(11), pages 1-16, November.
  • Handle: RePEc:plo:pntd00:0006088
    DOI: 10.1371/journal.pntd.0006088
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    Cited by:

    1. Julia Veidt & Steven Lam & Hung Nguyen-Viet & Tran Thi Tuyet-Hanh & Huong Nguyen-Mai & Sherilee L. Harper, 2018. "Is Agricultural Intensification a Growing Health Concern? Perceptions from Waste Management Stakeholders in Vietnam," Sustainability, MDPI, vol. 10(12), pages 1-13, November.
    2. Simon Gwara & Edilegnaw Wale & Alfred Odindo & Chris Buckley, 2021. "Attitudes and Perceptions on the Agricultural Use of Human Excreta and Human Excreta Derived Materials: A Scoping Review," Agriculture, MDPI, vol. 11(2), pages 1-30, February.

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