An Evidence-Based Approach to Hand Hygiene Design in a Humanitarian Crisis Enhance your skill to design evidence-based handwashing interventions for humanitarian response. This online training introduces the Wash'Em approach a practical methodology for understanding community behaviours and building context-specific solutions in emergency settings. Gain practical, field-ready skills in hygiene behavior change programming. Learn the evidence-based Wash’Em approach used in emergency settings. Develop confidence in using rapid assessment tools to understand community behaviors and barriers. Learn how to translate community insights into context-specific handwashing intervention recommendations.