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Handwashing Behavior Change at Scale: Evidence from a Randomized Evaluation in Vietnam

This brief summarizes the results of a gender impact evaluation study, entitled Hand washing behavior change at scale : evidence from a randomized evaluation in Vietnam, conducted in 2010 in Vietnam. The study evaluates a large-scale hand washing campaign in three provinces of Vietnam on the household level. The program did not have an impact on hand washing with soap behavior. Knowledge about the correct way to wash was high at baseline, and some areas of knowledge improved, but it did not have an impact on the already high access to soap within households and modest effects on the self-reported hand washing behavior of mothers. Observed hand washing behaviors remained very low; mostly caregivers wash their hands with water only. Funding for the study derived from the Bill and Melinda Gates Foundation.