... but others were not trained. There is no official swimming training in the school program in the Mekong River Delta. It seems an irrational structure for children living in a floodplain as the ... those living in the urban areas, children in the rural area are familiar with the water in rivers and canals. Their daily lives are linked with the rice fields and flood plains. Some of them ... 160,000) in the high inundated areas are not attending their schools. The beginning and the end of the rainy season are the best time for mosquito reproduction resulting in mosquito-based diseases....