by Travis Yates, Jelen Allen, Myriam Leandre Joseph et al.
International Initiative for Impact Evaluation (3ie), December 29, 2016

4 pp. 567 kB
http://3ieimpact.org/media/filer_public/2016/12/29/srb-wash.pdf

This review synthesised findings from 106 published and grey literature papers that evaluated 114 Water, Sanitation, Hygiene (WASH) interventions implemented in 39 low- and middle-income countries. Nearly half (43%) of the studies were from Sub-Saharan Africa, and Haiti and Zimbabwe had the most reported interventions. Most evidence included in this review addresses the question of efficacy or the theoretical potential for breaking transmission routes. The current state of the evidence shows that most addresses the question of whether or not the intervention works, but little addresses long-term effectiveness or if the intervention had the intended impacts or not.

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