This figure is higher than previously quoted figures as it includes all water and sanitation related diseases as well as the lasting impact on children, via malnutrition and being underweight (which causes 35% of all deaths of children under 5 years old worldwide). For example, Priiss et al. ( Yet, Priiss-Ustiin et al. ( This percentage goes up to nearly 30% deaths of children under 5 years old (WaterAid, 2009).