sentences:  EMW received a US$10.9 million grant from the Bill and Melinda Gates Foundation to improve sanitation and hygiene practices among the rural poor in Vietnam and Cambodia.EMW's program will benefit 1.7 million people in 344,000 households and 290 communes in Vietnam and Cambodia while working with local organizations, government partners, banks and private enterprises.The grant uses a results-based approach to sanitation and hygiene aid, which requires an initial investment from recipient families and communes, and then rewards them when results are achieved.