Among the individuals who declaredhaving eaten raw fish dishes, the prevalence was 25.5%. The vil-lages investigated are representative for the lowland areas of theCentral Vietnamese coastal provinces in terms of source and prepa-ration of freshwater fish. The prevalence of O. viverrini infection inthis study is lower than in a rural area in Thailand (21.6%) and thanthe reported very high prevalence of >50% in Lao PDR and Cambodia(