This document is the report a mission to Vietnam in May 2005 by Dr Val Curtis to explore the potential to develop the hygiene component of two projects; the Red River Delta Rural Water Supply and Sanitation project (RRD RWSSP), the Three Coastal Cities Environmental Sanitation project and also the potential for setting up a national effort on hygiene. Though the mission was largely concerned with hygiene, the provision of household sanitation was also reviewed. This document first addresses general issues about hygiene and sanitation in Vietnam. More detailed reviews and proposals for the three projects are provided as standalone documents in annexes 1, 2, 3 and 4.